Causes of diseases of the Chinese rose, diagnosis and treatment. White spots on the leaves of a chinese rose

Leaf bronzing virus. The leaves are covered with yellow spots and small tears, in places they become coarse and wrinkled.
Control and prevention measures: Diseased plants are removed, blue sticky traps are hung in the greenhouse for thrips, which spread this virus.

Ring spot virus. Yellow, often ring-shaped spots appear on the leaves.
Control and prevention measures: Do not use diseased plants for grafting. In case of severe damage, the plants are destroyed.

Greenhouse and tobacco whitefly. On the lower surface of the leaves, adult white-winged insects 2-3 mm long and their wingless pale yellow larvae are visible. In the tobacco whitefly, the wings are folded "like a house", and in the greenhouse - flatter. With a severe defeat, the leaves turn yellow. They show sticky discharge.
Control and prevention measures: They are treated with preparations based on potassium soap or with preparations such as Aktara, Aktellik, Iskra, Inta-Vir, Karbofos, Fufanon, Tanrek, Zubr, Biotlin, etc.

Spider mite. Yellowish specks appear on the leaves, later - extensive discolored and dried out areas. Small (0.2-0.5 mm) mites live on the underside of the leaves among the cobwebs. High temperature and dry air contribute to the appearance of mites.
Control and prevention measures: For mild damage, you can treat the plants with soap or mineral oil. If strong, treat with Fitoverm, Akarin, Vertimek, Lightning, etc.

Aphids. The leaves curl, turn yellow, with a strong lesion, sticky secretions of aphids are visible on them.
Control and prevention measures: On single plants or with mild aphid infestation, wash off with water and soapy water; in case of severe damage, they are treated with Antitlin, Tobacco dust, Aktellik, Fitoverm, Akarin, Aktara, Decis, Tanrek, Iskra, Zubr, Biotlin, Commander, etc.

Brown rot. It mainly affects seedlings and cuttings at the age of several days or weeks. The base of the stem turns brown and thinner. Long filaments of mycelium develop under the fallen leaves.
Control and prevention measures: Spray the cuttings with Rovral immediately after planting. Do not plant seedlings too deep. After planting, spray under low pressure so that the base of the stem is well moistened.

Worms. White waxy discharge appears on leaf veins and petioles, in which colonies of scale insects live.
Control and prevention measures: Affected plants are removed. When foliage is sprayed with mineral oil (M-30, M-50), the worms suffocate under the oil film. This treatment is carried out with protection from the sun and not too often.

Bacterial spotting. On the leaves, most often at the edges, yellow rotting spots with an oily border appear.
Control and prevention measures: Plants are regularly examined and, at the first signs of the disease, are treated with Cumulus, Euparen, Rovral, Fundazol and others.

Shields and false shields. Whitish or golden brown tubercles are visible on the surface of the stems. Usually, insects can be picked off with a needle.
Control and prevention measures: To remove pests from single plants and with a small lesion, you can use an old toothbrush, and then wipe the stems with a cotton swab dipped in kerosene. Insects suffocate under the kerosene film. You can also try leaf gloss sprays (oil based). If there are a lot of plants or they are severely affected, they are treated with an insecticide, such as mineral oil.

Chinese rose, otherwise called hibiscus, is one of the best ornamental plants that can be grown in the house. Hibiscus flowers with tubular stamens delight almost everyone who has the opportunity to admire them. Learn all about caring for a Chinese rose to keep your plant growing easy and producing the results you want. Also check out what diseases and pests can threaten the Chinese rose, and how to avoid potential problems when growing hibiscus at home!

A brief description of hibiscus

The Chinese rose (Hibiscus rosa-sinensis), also called hibiscus or kenaf, belongs to the Malvaceae family (which includes all possible mallow species). The home-grown Chinese rose should not be confused with its garden sister, the Syrian hibiscus, which is simply called Hibiscus syriacus.

The Chinese rose can be considered an ideal houseplant. Although its unusually large flowers bloom for only one or two days, with the right growing conditions, you will be able to enjoy uninterrupted flowering (flowers bloom every day) from May to October. The flowers are usually very large in size and with various colors, depending on the variety, they are purple, white or red, monochromatic or spotted, with interesting stamens collected in a tube.

Chinese rose, hibiscus - care, cultivation

Location for growing hibiscus. The Chinese rose prefers sunny places, but the light should be diffused. Ideal for this plant would be to be located on the south (but not on the windowsill or right next to the window, but rather somewhere at a distance of about 1 meter from it), west or south-west side (here it can be placed on the windowsill as well). In summer, hibiscus can be taken outside, for example, on a terrace, but this should be a slightly shaded place (partial shade). Never forget to protect the plant from direct sunlight on very hot days. With an excess of light, the leaves of the hibiscus begin to fade, and in a too shaded place the plant blooms weakly.

Temperature for growing hibiscus. The plant prefers to be warm. In summer, it feels best at a temperature of about 20 ℃, the highest temperature in the room that is allowed is 27 ℃. In winter, from November to January, hibiscus should be moved to a cooler room with a temperature of 15-18 ℃. At this time, the Chinese rose is dormant. Along with a decrease in temperature, the plant also needs to limit watering and stop feeding.

Air humidity when growing hibiscus. To grow a Chinese rose, it is necessary to provide it with conditions with a sufficiently high humidity; for this, the plant can be irrigated from a sprayer (it is better to do this with settled water). However, always remember that no water should come into contact with leaves exposed to sunlight, as this can lead to sunburn.

Watering the hibiscus. Caring for a home-grown Chinese rose requires watering the plant appropriately. From spring to summer, watering the hibiscus should be generous enough. Keep the soil constantly moist, but not wet. In the period from November, along with a decrease in temperature, watering is also limited to the plant (it is carried out no more often than once every two weeks).

Top dressing of the Chinese rose. When growing hibiscus at home, timely feeding is very important. Without this procedure, the plant will not be able to produce a large number of flowers. Hibiscus feeding should be started in the spring as soon as the first flower buds appear and continue to fertilize throughout the flowering period. Top dressing is carried out every week using multicomponent fertilizers for flowering plants, which can be dissolved in water for irrigation. Fertilizers should be dosed in accordance with the instructions on the package. In the fall, feeding is limited, and in the period from November to January, when the plant is at rest, it is completely abandoned.

Hibiscus transplant. A home-grown Chinese rose should be replanted annually in the spring. Usually, the ideal plant for the plant is land intended for planting indoor plants, which can be purchased at any flower shop. The ideal soil for hibiscus would be clay soil mixed with peat and sand, with a pH of 5.7 - 6.8.

Pruning a Chinese rose. To form the correct shape of the bush and ensure lush flowering, the Chinese rose needs systematic pruning. This procedure should be carried out in late winter when the plant is still asleep. Pruning can also be done during transplanting. The stems should be shortened to half their original length.

Reproduction of hibiscus. Reproduction of the Chinese rose at home is best done in the spring, rooting lignified cuttings cut from the apical shoots, on which 2-3 leaves are preserved. Before planting, the cuttings are dipped in a means that accelerates the development of the root system, and then they are transferred to light peat soil (for example, into a mixture of peat and sand). Cuttings are provided with a high temperature of about 25 ℃. They should be fully rooted within three weeks.

Chinese rose, hibiscus - diseases, pests

Improper growing conditions can often cause hibiscus diseases or pests.

Too moist soil can lead to rotting root system and falling leaves Chinese rose. Drying out of the soil, too dry or too humid air, can lead to the fall of flower buds. If the edges of the leaves are curled up, it may be because the soil in the flowerpot is too dry. The edges of the flower petals turn brown and then black if you spray the plant with strong heat in the sun or very cold water.

White or red spots on flowers or young shoots of hibiscus indicate that the plant has been attacked gray rot... In this case, completely abandon spraying the plant and perform treatment with Biosept 33 (at a concentration of 0.1%), "Rovral Flo 255" (at a concentration of 0.2%) or Teldor 500 (0.1%). After a while, repeat spraying.

If hibiscus leaves appear brownish purple spots, and then the leaves begin to fade, this indicates alternaria... To combat it, you can use the drugs "Rovral Flo 255", "Garant 500" or "Folpan 80" (at a concentration of 0.2%).

Too dry air encourages hibiscus pests such as aphids, mealybugs and spider mites.

Recognize presence spider mite on a Chinese rose, it is possible by the presence of yellow spots on the leaves and cobwebs on the bottom of the sheets. In this case, you should use the drug "Karate Zeon 050" at a concentration of 0.05% (5 ml per 10 liters of water). The second method of combating spider mites can be attributed to the use of insecticide in the form of sticks "Provado" or "Blank sheet". These funds do not work immediately, so you will have to wait a little before you get the desired result (the substances contained in the sticks enter the ground, and from there to the roots of the plant and its tissues, from where the pests suck them out). This can take about a few weeks.

That appeared on hibiscus mealybugs You will recognize it by the white cannon that accumulates at the base of the leaf petioles. You can fight them using the same insecticides as when a spider mite appears, "Provado" and "Blank sheet".

Aphid immediately forms colonies with offspring, most often planting their babies on young leaves, stems, flower buds and on the flowers themselves. Where aphids have sucked, the leaves begin to discolor and deform, often covered with sticky secretions of aphids - honeydew. To eliminate aphids from a plant, you can use any drug that is intended for this.

Remember that when spraying with any of the above drugs (other than those on a natural basis) to eliminate diseases and pests, the plant must be taken outside, because the drugs can be harmful to people. They are absolutely not to be used indoors.

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Major diseases of hibiscus

The plant is quite unpretentious, therefore even serious oversights, if they occur in a single quantity, cannot cause significant harm to it. But a systematic violation of the conditions of agricultural technology will definitely provoke trouble, the plant will begin to wither, feel bad, and get sick. All known hibiscus diseases can occur due to the following phenomena:

Being in a hot, dry room.
Lack of spraying, especially in the summer.
Being in the wind, in a draft, in direct sunlight.
Dustiness, contamination of hibiscus.
Excessive watering, which caused root rot.
Watering a Chinese rose with bad water (not settled, containing a lot of harmful impurities).
Pest infestation as a result of contact with diseased plants.
Lack of transplants, fertilizing with fertilizers.
Overfeeding hibiscus with nutritious fertilizers.
Poor lighting, or the flip of the flower with the other side to the sun.

If the living conditions of the Chinese rose are favorable, then it grows for a very long time, and blooms from March to October and even longer. But the violations described above, subject to their regular influence, can provoke various diseases. Below are the most common ones.

Name of the disease	Cause of occurrence	Description of signs
Non-infectious chlorosis	Disturbance of plant nutrition - a lack of nitrogen, iron, potassium, magnesium, or starvation in one of these elements due to an overabundance of the other.	Thinning of branches, weak color of flowers, lack of flowering (potassium deficiency), leaf spot (deficiency of magnesium, nitrogen), leaf fall, yellowing of leaves (lack of iron)
Infectious chlorosis	Infection of hibiscus with viruses, fungi, microbes and pests	Falling, yellowing of leaves, lack of flowering, general weakness of the plant
Sunburn	Direct sunlight on the flower, unexpected change in lighting	The appearance of white burn spots on the leaves of the plant
Vascular (tracheomycotic) wilting	Infection of the Chinese rose with fungi of the genus Verticillus or Fusarium, the development of diseases of fusarium or verticillosis, as well as infection with certain types of viruses	Drying, wrinkling of branches from the ends, rapid transition of the process to the trunk, death of the plant

Leaf diseases

Separately, I would like to dwell on the problems and symptoms that arise with disorders of the vital activity and development of the flower. Leaf diseases in most cases are triggered by chlorosis - a decrease in chlorophyll production in the green part of the plant. Below are the main symptoms of hibiscus distress, as well as their possible causes:

Yellowing of leaves - pest infestation, plant root diseases, leaf chlorosis, poor indoor air humidification.
Fall of hibiscus leaves - low humidity, no spraying, sudden changes in lighting, drafts, and other types of stress for the flower.
Yellowing, coupled with falling leaves - waterlogging of the root system in winter, stress, low humidity in the room.
Rolling the leaves into tubules is the defeat of aphids or some other pests.
Withering of the tips of the leaves - a lack of nitrogen, phosphorus, and other nutrients, a complete lack of complementary foods for hibiscus.
The general wilting of leaves and the whole flower is an excess of the temperature in the room above the norm, a decrease in humidity to low levels.
Dropping leaves and buds by a plant - lack of the required amount of potassium in the soil, damage to leaves by gall midges, high temperature in the room.

Treatment of diseases

Most of the plant's problems are solved by bringing its content back to normal. For this, it is important to provide the following conditions:

Do not water the flower too often, but do not forget to do it regularly, without drying out the earthy coma
Remove the flower from direct rays of the sun, put it in partial shade
Feed the hibiscus with fertilizers once a week until about mid-August, then once a month
The number of watering in autumn and winter should be reduced, and the plant itself should be placed at a temperature of up to 15 degrees
Spraying the flower should be daily, regardless of the season.
Provide good drainage, transplant a Chinese rose

Treatment of hibiscus diseases is carried out depending on the existing problems. To avoid sunburn, those plants that are grown in greenhouses must be exposed to the sun for an hour and a half a day, and only then begin to leave them for a longer period. Leaves that have already become covered with burn spots will fall off, new ones will grow to replace them.

Regular feeding of the plant with fertilizers, which can be found in any shop for flower growers, is excellent against non-infectious chlorosis. Before watering, water with iron deficiency must be flavored with iron chelate. Timely transplantation, avoiding contact with diseased plants, cleaning from dirt and dust, and fertilizing will help prevent infectious chlorosis. Periodically, the flower must be washed under the shower, covering the ground with cellophane. Temporary quarantine is required for all new plants.

It is very difficult to treat the vascular wilting of hibiscus; it is far from always possible to cure it. Many plants die quickly, sometimes their leaves do not even have time to fall. You can try to get rid of the problem in the following ways:

Cut off all dry areas, slightly capturing healthy parts of the flower
Treat the whole plant with special antifungal drugs (Dezavid, Zircon, Thunder-2, Domotsvet, Tsitovit, Epin, Alirin-B, etc.)
Sprinkle a Chinese rose with Trichopolum solution (2 tablets per liter of water) - a folk method

Pests

Plant pests settle on it after contact with diseased flowers, or when transplanted into contaminated soil. Most often, the following pests are placed on a Chinese rose:

Aphid. Small insect settling on buds, young shoots. It multiplies quickly, creates colonies, destroying young leaves and unopened flowers, which initially become sticky.
Spider mite(red spider). It is invisible without a magnifying glass, lives on the bottom of the leaf, enveloping it with a shell, similar to a cobweb. It reproduces best in warm, dry air.
Greenhouse whitefly. Causes yellowing of leaves, covering them with sticky secretions. The insects themselves or their yellow larvae can be seen from the bottom of the leaf.
Worms. They manifest themselves as a waxy white discharge on cuttings, in the axils of the leaves.
Shields, false shields. After their settlement, brown tubercles are observed on the stems.
Gallica. This midge causes dropping, yellowing of leaves and buds, which do not have time to bloom. Inside the buds, small midge eggs can be found, from which worms emerge. They eat the buds from the inside, which together with them fall to the soil.

What to process

The question of how to treat hibiscus for diseases, in the presence of pests, is very relevant. If the prevention of diseases caused by pests turned out to be ineffective, then the following methods of treatment are carried out:

From aphids - treatment of the flower with Anabazine, Nicotine sulfate. It is recommended to change the drug more often - for Decis, Fitoverm, Intra-vir, Tobacco dust. With a single lesion of the leaves of aphids, treatment with a soap solution helps well.
From scale insects - spraying with Actellik solution or other insecticides.
From the worm - processing the leaves with mineral oil, which is done only when the plant is in the shade.
From whitefly - treatment with Aktara, Karbofos, Iskra, Tanrek, Biotlin, Bison, applying potassium soap.
From spider mites - washing the plant with soapy water, treatment with preparations Lightning, Vertimek, Akarin, Fitoverm.
From gall midge - collection of affected buds, preventing them from falling to the soil. The soil itself must be treated with any medicine for soil pests.

Of the folk remedies that can be used to combat plant pests, the following are popular:

Pour dry red pepper with water (1: 2), cook for an hour, strain. 10 gr. dilute the resulting solution in a liter of soapy water, process the plant. This method works well against ticks, aphids.
Boil dry mustard (50 gr.) In a liter of water for 15 minutes, let cool. Dilute the product in 20 liters of water, rinse the flower leaves from aphids, scale insects

If you follow all the conditions for growing a plant, then it is unlikely to have problems in the form of diseases and pest infestation. A healthy hibiscus will bloom for a long time and delight its owner.

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Chinese rose - diseases, pests and ways to combat them + Video

The Chinese rose, also known as hibiscus, is quite unpretentious, but it also has its enemies in the form of various pests and diseases that annoy it. Knowing about the causes of the defeat by any ailments, you can completely prevent the disease of this plant. And if a similar attack befell the Chinese rose, then you need to know about the ways to deal with it.

What provokes diseases of the Chinese rose?

The main symptoms of a worsening condition or disease of hibiscus

All about hibiscus diseases - types, symptoms and causes

Treating diseases and dealing with the consequences of some mistakes in care

What if the plant is stressed?

The most common pests and their control

Most of the diseases of the Chinese rose are associated with improper care of it. And in second place in terms of the number of diseases and the frequency of their manifestation are cases of infection with fungi and pathogenic viruses. But, by the way, the defeat of the rose by most of these ailments also depends on the correctness of its cultivation. After all, when a plant is not properly cared for, it becomes weakened and, as a result, more susceptible to infection by fungi and viruses.

Chinese rose

Hibiscus is resistant to adversity - it is not very dependent on how it is grown. It means that even serious flaws in caring for it cannot cause significant harm to a Chinese rose. However, this plant "forgives" such negligence only if they are allowed in a single quantity. A systematic violation of any requirements of agricultural technology will certainly provoke certain troubles and diseases. At first, the hibiscus will begin to feel bad (weaken), and then it will wither and hurt.

So, all currently known diseases of the Chinese rose can strike it due to the following mistakes in care:

placing the plant in a draft, in the wind or in direct sunlight;
excessive watering, resulting in root rot;
placement in a dry or hot room;
pollution and dustiness of the plant, especially its leaves;
lack of spraying or when they are extremely rare, especially in summer;
watering with poor quality water (containing many impurities harmful to a room rose or not settled);
poor lighting, and sometimes the flower turns its back to the sun;
Overfeeding with fertilizers;
lack of fertilizing and transplanting;
allowing contact with already diseased plants, as a result of which hibiscus is affected by diseases and pests.

All these violations in care, provided they are systematically influenced by the Chinese rose, provoke various diseases in it. If this plant is provided with favorable conditions, or at least not injured by a careless attitude, then it grows for quite a long time and always pleases with its flowering every year from April to October, or even longer.

2 The main symptoms of deterioration or disease of hibiscus

In most cases, the first signs of a deterioration in well-being or disease of a Chinese rose are any changes in the state of its leaves, as well as some of the other symptoms listed below. In each case, the plant can be unhealthy, usually for one of several reasons. The following are the main symptoms and the most likely causes of their occurrence.

Yellowed hibiscus leaves

If the hibiscus has leaves:

Turned yellow - the plant is infected with pests (spider mites or aphids), its roots turn white, leaf chlorosis or there is not enough humid air in the room.

Turned yellow and fall off - stress (occurs when unfavorable factors or a sharp change in conditions of detention), drafts or insufficiently humid air in the room, and in winter also from overmoistening of the roots.

Fall off - there is not enough humid air in the room, stress, a sharp change in the intensity of lighting or drafts.

Wither at the tips - the plant lacks phosphorus and nitrogen, as well as, most likely, some other nutrients.

Curled up into a tube - pest damage, most likely aphids.

They fall together with flower buds - the room is too hot, the plant does not have enough potassium, or it is affected by a pest (gall midge).

Wither along with the entire plant - the room is too hot or the humidity is below the critical levels for a Chinese rose.

What exactly is the reason for the appearance of most of these symptoms should begin to be clarified by identifying possible deficiencies in care. That is, we determine whether the temperature and humidity in the room, the frequency and amount of watering, as well as spraying and fertilizing with fertilizers required for hibiscus, correspond. Then, by the method of elimination, we determine the possible, and, most often, the real reasons. If they consist in improper care, then we eliminate the mistakes made. And how to deal with other reasons will be discussed later.

3 All about hibiscus diseases - types, symptoms and causes

The most common hibiscus diseases will be described below. Most of them are manifested in a change in the appearance of the leaves. Let's start with these ailments in order of their prevalence. Leaf diseases are in the overwhelming majority of cases provoked by chlorosis. This is a disease in which the process of chlorophyll formation is disrupted in a plant and the activity of photosynthesis decreases. The main characteristic features of this disease in hibiscus are yellowing and / or falling leaves. Chlorosis is of two types - non-infectious and infectious.

Non-infectious rose chlorosis

Most often, the Chinese rose is affected by non-infectious chlorosis. The reasons for its occurrence lie in a malnutrition: insufficient or excessive supply of nitrogen, potassium, iron and magnesium. Moreover, it should be noted that magnesium and potassium, by their nature, are competing elements. That is, an overabundance of one causes a lack of the second. The symptoms of non-infectious chlorosis in Hibiscus are as follows. With a lack of iron, the leaves turn yellow and then fall off. If thinning of the branches is observed, the plant does not bloom at the right time, or its flowers have a pale color (not bright enough), then this indicates a potassium deficiency. When a rose lacks magnesium or nitrogen, the leaves become stained: yellow, whitish or lemon-colored.

Infectious chlorosis, as its name suggests, affects hibiscus as a result of infection. The causative agents of this rose disease are fungal microorganisms, viruses and even pests. The symptoms of infectious chlorosis are as follows: yellowing and subsequent leaf fall, as well as general weakness and lack of flowering of the plant. Perhaps the next most common disease is sunburn. Signs of this ailment are the appearance of white spots on the leaves, as in the photo. They result from the partial destruction of chloroform in green tissues in direct sunlight. This usually happens with plants for which the intensity of the illumination has been abruptly changed - transferred from a less illuminated place or from a greenhouse to a bright sun.

Vascular wilting is the result of infection of hibiscus with fungi of the genus Verticillus or Fusarium. With verticillosis, the leaves of the plant begin to curl from the bottom of the trunk and turn yellow. This process then moves up the stem. A severely affected rose will have only the very top of the green. If the room is hot, then the leaves wither very quickly, without having time to curl, with the result that the plant looks as if it was scalded. Fusarium is manifested in the slow wilting and subsequent death of leaves without changing their color, that is, they remain green at the same time. On the upper leaves, the edges may become watery, and some areas may acquire a pale green or light yellow tint. In both cases, after the defeat of all leaves, the trunk dries up quickly and the plant dies.

Bacterial spot

Bacterial spotting is a disease, the manifestations of which can be observed not only on the leaves, but also on the shoots. Basically, this ailment in Hibiscus is caused by bacteria such as Xanthomonas. This disease most often affects young shoots and leaves. Depending on the specific type of pathogen, the symptoms of the disease may differ slightly. The most characteristic and common pattern is when watery yellow small spots first appear on the stems and leaves (seen in the photograph), which gradually turn black. The shape of the spots is most often irregularly angular, and along their contour, a light green or yellow border is visible. The spots gradually increase in size and then merge. As a result, the entire sheet turns black. So the disease progresses throughout the plant and eventually dies.

Another variation of bacterial mottling is fire blight. It is caused by other bacteria belonging to the genus Pseudomonas. Most often, a fire blight begins with young shoots, leaves and flowers. Its symptoms are as follows. On the plant, not spots are formed, but immediately rather extensive shapeless areas of blackening (as in the photo), which soon dry out. Outwardly, such areas on the sheet look as if it was burnt in this place. The progression of a bacterial burn causes first the death of individual parts of the plant, and then its death. Under favorable conditions, this disease develops very quickly.

When damaged by brown rot, the stems of the hibiscus turn brown and thinner at the very base. The rose is greatly weakened and may die. Most often, this disease affects young seedlings and plants.

4 Treating diseases and dealing with the consequences of some errors in care

Most of the problems that have arisen with hibiscus are solved by bringing the conditions of its maintenance back to normal and eliminating errors in care. Since the purpose of this article is not to consider exactly how to care for a Chinese rose, all these points will be omitted. Let us dwell only on the elimination of a number of specific omissions in the care indicated above in the chapter on the main symptoms of a deterioration in the condition of the plant. In case of insufficient humidity in the room, the plant should be sprayed more often - not once, but several times a day. At the same time, waterlogging of the soil should not be allowed - so that after such a "shower" the water is already in the pot. If the hibiscus is hot, then you should try to lower the temperature in the room with it, and you should also shade and spray it.

Fertilizers for Chinese rose

When a plant lacks some nutrients, then, of course, it is necessary to feed it with appropriate preparations, including precisely the missing elements. If the roots become waterlogged in winter, then watering should be temporarily reduced in quantity and volume, and the plant itself should be sprayed instead, making sure, again, that less water gets into the soil and it does not turn into a liquid slurry. What to do in the event of drafts is clear and so - you need to eliminate the cause of their occurrence or move the Chinese rose to another, quieter place.

Now about the treatment of diseases. Non-infectious chlorosis can not only be defeated, but also prevented by regular feeding of Hibiscus with fertilizers. If, nevertheless, this misfortune happened, the emphasis should be placed on those dressings that contain the missing elements. It should also be noted that the symptoms of iron deficiency (yellowing of leaves) appear against the background of a lack of nitrogen and an increased content of chlorine and calcium in the water used for irrigation. Therefore, before watering, the water must be defended, and then add such a microfertilizer as iron chelate to it. The latter should be done if there is indeed an iron deficiency. And it is necessary to monitor the sufficiency of the amount of fertilizing containing nitrogen.

Infectious chlorosis is best prevented. To do this, do not allow the contact of the Chinese rose with diseased plants, it is necessary to make timely transplantation and fertilization for it, and it is also necessary to regularly clean it of dust and dirt. The latter is best done with my hibiscus in the shower. At the same time, cover the soil in the pot with cellophane. And yet, all new plants brought home must undergo a temporary quarantine procedure. That is, they must be placed separately for several weeks and away from the existing flowers. In case of a hibiscus disease, use the appropriate drugs (designed to combat identified diseases and pests) for its treatment.

To prevent sunburn, Chinese roses grown in greenhouses and grown in a darkened room must be accustomed to changing lighting gradually, putting them out in the sun, first for an hour and a half a day. Then we gradually increase the duration of the plants' stay in bright light and only after full adaptation to it we change their "place of residence". If, after all, the hibiscus got burns, it's okay. He quickly gets used to changing lighting, and the leaves that have received burn spots simply fall off, giving way to the soon growing new normal ones.

Zircon for rose treatment

It is very difficult to treat vascular wilting and it is not always possible to heal hibiscus from it. Often, he quickly dies and at the same time it happens that his leaves did not even have time to fall. You should fight this disease like this:

We cut off all the affected (dried) plant fragments, while capturing its healthy parts a little.

We treat the whole rose with special antifungal compounds: Fundazol, Topsin, Dezavid, Alirin-R or others. You can also use the drug Rovral, the solution of which must be poured at the root. There is also a folk remedy - spraying the plant with a solution of Trichopolum (2 tablets per 1 liter of water).

Additionally, you can stimulate the protective mechanisms of the rose by treating it with Epin, Zircon, Domotsvet. Just before that, you need to make sure that the selected composition can be used in combination with the antifungal agent used.

If at the initial stage it was not possible to cure vascular wilting, and the hibiscus continues to hurt and wither, it will have to be destroyed. Bacterial spotting is remarkably cured by spraying the plant itself while watering the soil in a pot with a solution of Trichopolum (1 tablet for 2 liters of water). Also effective are such well-known copper-containing preparations as copper sulfate and Bordeaux mixture. Not only for treatment, but also for prevention, you can also use Fundazol, Euparen. To prevent damage from brown rot, cuttings and seedlings of hibiscus must be treated with Rovral. In addition, seedlings should be planted shallowly, and after planting, thoroughly sprayed with the same preparation.

5 What if the plant is stressed?

When a plant is stressed, the first step is to try to figure out what caused it. If the reason is the onset of a strong deviation of the conditions of detention from those necessary for the hibiscus, then it must be eliminated. The plant is unlikely to adapt to this, especially if the changes that have come are, in principle, unacceptable for its life. Stress can also occur due to the fact that the rose is greatly disturbed, for example, it often changes its "place of residence" (constantly transplanted or transferred from one place to another, which usually happens during repairs and moving) or does not monitor the behavior of children and pets that are overly curious about houseplants.

Signs of stress in hibiscus

Such effects on the plant must also be stopped immediately. In the first case, the hibiscus should, at least for a while, be left alone until it cope with stress (stop transplanting or choose the most suitable place for it, from which it will not need to be transferred for a relatively long time). In the second - to permanently protect the plant from domestic "robbers", that is, for example, to find a place inaccessible to them.

Stress can also be caused by minor changes in conditions of detention, when their main parameters are within acceptable values (associated with: transferring from one room to another or from a greenhouse to a permanent habitat; with slight deviations from previous care), seasonal changes in the environment. environment (for example, a decrease in the level and duration of lighting in winter), any damage, transplantation or flowering (also a stress load for young and weakened plants). In this case, no drastic measures will have to be taken.

Well, with the stress itself, the Chinese rose, as a rule, is able to cope on its own. In the first two cases, this will happen after the elimination of the reasons that provoked it, and in the last - due to adaptation to new conditions. But in order for the plant to successfully and quickly cope with stress, it is necessary for it to provide rest, spray more often and more closely monitor compliance with the schedule and norms of irrigation and feeding, as well as the quality of water and fertilizers used for this.

In addition, hibiscus can be helped to stimulate the adaptive processes in it with the help of anti-stress drugs, especially if the stress state does not go away for a long time and the plant is greatly weakened. These include: Zircon, Fitosporin, Planriz, Epin-Extra, Planriz, Kresacin. Such drugs have an immunostimulating and anti-stress effect on plants. It is necessary to choose and use the necessary "drug" in accordance with the instructions for it.

6 Most common pests and control

Pests start on a plant in two cases: when they are transplanted into infected soil, or as a result of contact with already diseased flowers. Hibiscus is most commonly affected by the following pests.

Aphid. This small insect settles primarily on young leaves and shoots, as well as on plant buds. It multiplies very quickly, creating whole colonies. It is able to completely destroy unopened flowers and young leaves, which at the initial stage of the lesion become sticky and deformed. It is necessary to fight aphids by treating the plant with Akarin, Fitoverm, Biotlin, Intra-Vir, Decis. Nicotine Sulfate and Tobacco Dust also help a lot. In the early stages and in cases of a single partial lesion of the leaves, it is sufficient to limit the treatment with ordinary soapy water.

Signs of a spider mite

Spider mite. You cannot see this pest without a magnifying glass, especially since it settles on the bottom of the leaves. The latter, when affected by a tick, first fade and become covered with small yellow specks, which is clearly visible in the photograph. The pest envelops the underside of the leaves with a dense web, in which it lives. Subsequently, if measures are not taken immediately, extensive dried out areas form on the leaves. The fight against mites includes washing the leaves with soapy water or mineral oil and then treating the plant with Akarin, Molniya, Vertimek, Fitoverm.

Whiteflies. Usually they hide on the underside of the leaves, where you can find their adults and pale yellow larvae (shown in the photo). A characteristic sign of whitefly damage to a plant is the appearance of a shiny sticky coating on the upper side of the leaves. This is the discharge of the pest. After a while, sooty fungi develop in them, due to which the surface of the leaves becomes first white and then black. It is these fungi that can cause severe harm to the plant, and not the whiteflies themselves. In addition, this pest is a carrier of various viral infections. The symptoms of whitefly-borne diseases can be very different. This is chlorosis, and the leaves can turn yellow, deform, curl.

It is necessary to fight this pest by treating the plant with a solution of potash soap or with Aktara, Admiral, Biotlin, Bankol, Iskra, Apploud, Fufanon, Tanrek preparations.

Worms. Signs of their damage to the plant: in the axils of the leaves and on the cuttings, waxy lumps and a powdery coating of white appear, as in the photograph. Ways of struggle: treatment with the same drugs as for whitefly.

Shields and false shields. Signs of damage: pale brown or brownish rounded scales (tubercles) appear on the stems and leaves of the rose, which can hardly be separated from the plant. These are already adult pests. In case of mild damage, we clean the scales with a cloth or a toothbrush soaked in soap or alcohol solution. A kerosene-soap emulsion also helps well. In case of severe damage, we use one of the above insecticides.

Gall midge. Signs of defeat: leaves and still unblown buds turn yellow and fall off. It is imperative to examine the buds and identify all affected. Small eggs of the pest will be visible in them. All these and yellowed buds must be cut off. You can't let them fall to the ground. Then we cultivate the land with one of the above insecticides.

published on cemicvet.ru according to the materials nasotke.ru

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Hibiscus diseases

Home »Gardening and floriculture» Diseases of plants »Diseases of hibiscus

Hibiscus is quite resistant to disease, with proper care they rarely get sick. When kept indoors, the owners often have to deal with an attack on plants by aphids, scale insects, to find out why the leaves of the hibiscus turn yellow, which is why the buds do not open. Diseases are often the result of plant care errors.

Chinese hibiscus diseases

It is recommended to wipe the leaves of the Chinese rose with a damp cloth once a week, some housewives add a little sugar to the water, the greens become brighter. Hibiscus must not be poured, the earth must dry out between waterings. The flower can be attacked:

1. Scabbards, false scutes - the leaves dry up, fall off, brown spots of scabbards are visible on the surface of the leaves.

2. Aphids - foliage turns yellow, curls, falls off;

3. Worms - white bloom on the veins, the colony of pests is treated with mineral oil M-30, the worms suffocate under the oil film;

4. Greenhouse whitefly - an adult insect lays larvae on the underside of a leaf, the leaf becomes covered with a sticky bloom, turns yellow.

5. Spider mite - yellow specks appear on the leaves, which then discolor and dry out. The mite lives on the inner surface of the leaves in a cobweb.

Pest control measures

From the scale insects, the bush is sprayed with Actellik's solution (diluted with 1.5 ml of the drug in 1 liter of water).
When attacked by aphids, they are treated several times, it is recommended to change the preparations. The plant is sprayed with solutions of Decis, Inta-vira, Actellik, Fitoverm.
Treatment of the affected leaves with mineral oil (M-30, M-50) saves from the worm. In this case, the worms suffocate under the film formed from the oil. The procedure must be carried out outside the sun.
Whitefly is destroyed by Aktara, Karbofos.
With a spider mite, the leaves are treated with soap, if it does not help, then Fitoverm, Akarin, Vertimek, Lightning.

Viral diseases

1. Bronze - the surface of the leaf is stained, wrinkled, coarse; 2. Ring spot - yellow spots in the form of rings form on the leaves.

Bronze of hibiscus

Ring spot on hibiscus

Viral diseases are not cured; at the first signs of the disease, the plant is destroyed.

Diseases of the hibiscus garden (Syrian)

The plant requires shelter for the winter, in the southern regions they cover the first 2-3 years, in the north, an adult hibiscus also needs shelter. In the spring, the bush is cut off: the young branches of last year are shortened, and the old, sick, frostbitten branches are cut out, trying to make a cut near the ground. Without pruning, the plant blooms worse, loses its decorative effect, the lower part of the trunk is bare.

The trunk can be exposed due to leaf fall as a result of chlorosis. Excessive calcium content reduces the absorption of iron and nitrogen by the plant, yellowing of the hibiscus can serve as a signal to apply fertilizers containing iron. Nitrogen fertilizers are added sparingly, especially during flowering. Excess nitrogen leads to increased growth, the bush looks lush, with dense bright greens, but does not bloom.

Tags: plant diseases hibiscus

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How to protect indoor hibiscus from pests and diseases

One of the reasons why the leaves of a houseplant begin to curl is pests. For example, a flower affected by a whitefly (whiteflies are one of the most dangerous pests) has yellow leaves covered with sticky droplets all over their surface. In addition to whitefly, the plant is threatened by other pests of hibiscus: aphids, gall midges and spider mites.

Spider mite

Aphids are another attack familiar to people who are fond of floriculture. Aphids are usually attracted to the fleshy shoots of the plant, so they quickly attack it and drink juices from it. One of the characteristic signs of the appearance of this pest is that the plant rolls the leaves, and subsequently sticky droplets quickly appear on the leaves.

To combat aphids, the following methods are used: first, they should be removed from the leaf and stem using a cotton pad, and then treated with soapy water or special preparations (Aktara, Iskra).

Gallica

Another reason the leaf blade twists and falls off is the gall midge, which poses a threat to both the leaves and the root system of the plant. Usually, the eggs of the pest can be found in the buds of the plant - it is there that worms hatch from the eggs, gnaw the buds, and then fall into the soil, closer to the roots of the plant.

Diseases and their causes

In addition to insect infestations, your flowers can be exposed to diseases. Diseases of hibiscus, if left to chance, can cause the death of the plant. Rotten roots, leaves starting to dry out are all clear signs that the hibiscus needs help. It will not be about various types of rot, when the plant has rotted or its roots have dried up, but about diseases that affect the state of the foliage of the flower. So let's take a look at the main leaf diseases and their treatments.

Chlorosis

Chlorosis is nothing more than the loss of color by the leaves. The diseased leaves rapidly lose their color and become very pale, even slightly yellowish. The disease is most dangerous because the leaves can not only lose their color, but over time they can begin to fall off. Thus, if you do not take any measures, your hibiscus may soon be completely naked.

Sunburn

Another attack that poses a significant danger, but in essence is not a disease, is a sunburn. Everything is simple here: sunburn occurs as a result of a breach of conditions of detention. Hibiscus, like the vast majority of plants, cannot stand direct sunlight. Therefore, if you forget about it and place it in a place where it will be directly affected by them, be prepared to accept the consequences in the form of sunburn.

Also, this attack can appear if you kept your plant in the shade for a long time, and then sharply put it in a bright place. In this case, it is not even necessary that direct sunlight falls on it - a simple change of scenery will be enough. In addition, sunburn can occur even if the leaf seems to stick to the glass.

A sunburn looks like a small reddish or yellowish dry spot on the surface of the leaf plate. It is better to take measures to save hibiscus immediately, because the longer you delay, the more rehabilitation the flower will then need.

Treatment and prevention

In order to eliminate the problems, it will be necessary to cure the plant, saving it either from the invasion of insects or from diseases. If, in the case of insects, it will be enough to apply any effective insecticide or acaricide (and for those who like to use folk remedies - a soap solution), then with diseases you need to act a little differently.

In case of chlorosis, it is necessary to treat the hibiscus with iron chelate and apply the necessary fertilizers (since the disease itself is often caused by a lack of nutrients). Except for improving the living conditions, you will not help the plant.

In order to eliminate the effects of sunburn, you need to remove all damaged hibiscus leaves, as well as optimize the conditions of detention - for example, put in a darker place.

To keep your hibiscus leaves safe and sound, follow these simple guidelines:

In this video, an expert will talk about how to save indoor plants from pests and diseases.

Yellowing of leaves and other problems of hibiscus - part 4

1) The buds do not open and fall off.

The reason is that the plant is under stress (a sharp violation of the conditions of maintenance): drought, or vice versa, there is not enough moisture, the temperature of the content is too low or too high.

2) Simultaneous yellowing of leaves (up to 40%).

Possible reasons:

changing conditions of detention, insufficient watering (especially in the heat);

excessive watering (too short intervals between waterings, the situation is aggravated at low temperatures of maintenance) or, for example, the plant is overdried (they forgot to water), and then we fill it with water, mistakenly suggesting that this will correct the situation;

overheating of the earthen coma with a simultaneous deficiency of moisture in the soil;

too low (high) ambient temperature;

too much direct sunlight during the daytime during May / August; the situation is exacerbated by high temperatures and low humidity;

3) During the growing season, there is no vegetative growth, and the leaves may turn yellow, there is no flowering.

poor illumination of the plant;

the plant is infected with pests (aphids, spider mites);

the plant is under the influence of a draft (wind).

4) The sheet is deformed, twisted, the structure becomes rigid.

The reason is the plant's phytotoxic reaction to chemical treatment. drugs.

5) The leaf turns brown at the edge of the leaf plate.

The reason is too frequent feeding and (or) too high concentration of fertilizer, and (or) feeding was carried out on a dry substrate.

Pour plenty of water over the clod (to flush out excess fertilizer).

6) The edges of the petals of the flower are rolled up (the defect occurs in plants that are kept in the open air).

The reason is excessive watering in the heat and (or) exposure to sunlight in the morning on a petal covered with dew.

7) The plant is infected with diseases of viral, bacterial or fungal origin.

7.1 Symptoms - Rusty spots appear on hibiscus leaves.

The reason is the fungal disease Alternaria. Plants suffering from nutritional deficiencies are usually affected. The disease worsens during periods of high humidity. Apply foliar dressing to the plant, treat it with Zineb or Benlate fungicides.

7.2 Symptoms - Hibiscus leaves become covered with black spots and markings (especially in cool weather).

The reason is a fungal disease that primarily affects weakened plants. Treat the plant with Benlate or Zineb fungicide, revise its conditions.

7.3 Symptoms - leaves and flowers of hibiscus curl, flowers have a faded color.

The reason is a viral disease. The plant is disposed of.

7.4 Symptoms - the stems of the plant turn black, depressions form at the site of the lesion. Symptoms appear during the fall / winter time.

The reason is a fungal disease. No treatment is carried out - the plant is disposed of.

The flower of love, the Chinese rose, is very tolerant of care slips. Single, even significant, oversights do not cause serious harm to the plant. Only a constant violation of the needs of the rose leads to serious consequences - the appearance of pests, the occurrence of diseases or the death of the entire plant.

The main mistakes when growing a Chinese rose

The main mistakes that negatively affect the health of the Chinese hibiscus:

Keeping the plant in a room with a high temperature and low humidity.
Arrangement of a flowerpot in a draft or in the sun at noon.
A layer of dust on the leaves and branches of the tree.
Poor drainage, waterlogged soil, leading to root rot.
Use for irrigation of unsuitable water: cold, with a chlorine content, with a high content of hardness salts.
The appearance of pests after being outdoors or in contact with plants inhabited by pests.
Lack of soil replacement, fertilization, transplanting into a more free pot for a long time.
Excessive application, especially of nitrogen fertilizers ..
Insufficient lighting, change in the position of the flower relative to the light source.

Creating favorable conditions for hibiscus prolongs the flowering period, which usually lasts from March to October, and sometimes longer. The indicated mistakes in the maintenance of the rose lead to the occurrence of diseases that worsen the appearance and quality of flowering.

Diseases

Name diseases	Reason for appearance	Signs of the disease
Non-infectious chlorosis	Nutrition imbalance - an overabundance of one or more elements, against the background of a lack of others.	Thin branches, pale leaves, faded flowers, weak flowering indicate a lack of potassium in the plant's nutritional system. The appearance of spots on the leaves signals a lack of nitrogen or magnesium; sudden leaf fall or whitening of leaves - iron deficiency.
Infectious chlorosis	Infection of the Chinese rose with pests, microbes, viruses, fungal infection.	General oppression of the plant, weak flowering, leaf fall, leaf curl, the appearance of traces of the vital activity of pests on the leaves and branches.
Sunburn	A sharp change in illumination when the plant changes its place of residence, excessive insolation at noon.	Burns in the form of white spots on hibiscus leaves.
Vascular (tracheomycotic) wilting	Infection of a plant with a fungal infection of Verticillium or Fusarium, with the development of the disease.	Rapid development of the process of dying off the ends of the branches, with the transition to the trunk and the death of the whole plant

Leaf diseases

A painful change in the state of the leaves is associated with a decrease in the production of chlorophyll by the green parts of the plant.

The main signs of pain and the causes of its occurrence:

Rapid yellowing of leaves- pests, nutritional deficiencies, root rot or diseases, lack of moisture in the room.
Sudden leaf fall- low humidity in the room, lack of spraying, change in the light regime, stressful conditions for the plant (a sharp increase or decrease in temperature, numerous drafts).
Sudden yellowing of leaves combined with leaf fall- low air humidity in the room, rotting of the root system, stressful changes in the conditions of detention ..
The appearance of curled leaves- damage to the Chinese rose by pests.
Brown leaf ends- lack of nutrition.
Withering of the plant as a whole- overdrying of an earthen coma, excessive temperature in the room, decrease in humidity
The plant sheds leaves, flowers and buds- lack of potassium, damage by pests, excessive temperature in the room.

Most of the diseases affecting hibiscus are non-infectious in nature, but are the result of deficiencies in plant maintenance. Having eliminated these shortcomings, we will also eliminate the causes of these diseases, and restore the health of the rose.

The main rules, observing which the Chinese rose - a flower of love will be healthy and delight with lush flowering:

Moderate watering without stagnation of water and overdrying of an earthen coma, good drainage.
Good lighting without the midday sun.
Timely fertilization... In summer, once every 7-10 days, in winter, once a month.
Reducing watering and temperatures up to + 15 ° C in winter.
Spraying hibiscus daily soft demineralized water at any time of the year.
Annual transplants young plants or replacement of the topsoil in adult specimens, if the necessary drainage is available.

The vascular wilting of the Chinese rose deserves special attention. The transience of the development of this disease does not allow timely taking the necessary measures to save the pet. Urgently needed:

cut off dried branches with the capture of a healthy part;
to treat the plant with antifungal agents (Fundazol, Quadris, Strobi) and to strengthen the plant with immunostimulants - Epin, Zircon, Immunocytofit);
sprinkle with Trichopolum solution (2 tablets per 1 liter of water).

Pests

Pest	Description	Signs	Funds
Aphid	Small, fast-propagating insect that settles on young shoots and buds.	The appearance of a sticky plaque on the plant.	Fitoverm, Biotlin, tobacco dust
Spider mite	A small, red spider, visible only under a magnifying glass.	When it appears, the seamy side of the sheet is covered with cobwebs.	Soap solution, Akarin, Fitoverm
Whitefly	Small, white, flying insect. It lives on the back of the leaf.	Sticky spots on leaves and shoots.	Fitoverm, Biotlin, potash soap
Scorms	The closest relative of the scale insect, up to 8mm in size.	Waxy discharge on leaves and shoots	Mineral oil
Shields, false shields	Visible brown bumps on leaves and branches.		actellic
Gallica	Midge laying eggs in buds that crumble	Falling buds, inside of which there are worms falling into the soil.	Timely collection of fallen buds, Muchoed, Provotox, Grizzly

Why isn't the Chinese rose blooming?

You can stimulate flowering if you cut off old branches in a timely manner, replace the soil with fresh, put the plant in the sunniest place. Fertilizing will cause new shoots and buds to appear on the plant.

Flowers on a Chinese rose appear only on young shoots, pruning old branches will speed up the emergence of new shoots and buds.

An interesting point. If hibiscus spent the whole summer outdoors, and returning home in the fall, fell into a cold atmosphere, on a sunny windowsill, then its flowering will continue. And if the rose stays in a hot room all winter, then it will bloom not earlier than spring.

"Grandma's Secret" How to Make Stubborn Hibiscus Bloom.

Once again transplanting a flower, you need to stick a wooden stick about 10 cm long into a lump of earth at a short distance from the trunk. Thanks to this trick, the flowers will open on the rose one by one.

Why do the leaves turn yellow?

Yellowing of the leaves on a Chinese rose signals that there is a problem with watering. The water used to watered the hibiscus contains chlorine, hardness salts, or the water is too cold. A brown border on the leaves indicates that the plant is overfed with nitrogen. Watering a rose with warm, soft, melt water will bring the flower back to life.

A plant that has dramatically changed its living conditions can completely shed both flowers and leaves. But this is not for long. Soon, new leaves will appear on the bare branches.

Description of hibiscus and growing problems: video

For someone who wants to have a beautiful plant at home, but still does not know how to take care of indoor flowers, hibiscus is ideal.

Hibiscus is an ornamental houseplant that blooms most of the year. Its lifespan can be up to 20 years. Like any flower, hibiscus needs good conditions and care.

However, even with proper care, the plant is not immune from pests, diseases, and therefore possible death. But this can be avoided if the cause of the disease is recognized in time and measures are taken.

How to find out what the plant is sick with? How to save and what treatment to choose? Answers to these and other questions can be found in this article.

Diseases and pests
Check out the description and photos of the ailments and pests of this plant.

What kind of trouble can happen to the leaves?
Most often they happen due to the following adverse external conditions and care errors:
- drying out or waterlogging of the soil, cold drafts, temperature drops.
, droop - the air is too dry. It is necessary to periodically spray with water.
Leaves dry- dry and hot air, dry soil, lack of light (?).
The upper leaves are firm, but yellow- the soil has a high calcium content, or too hard water is used for irrigation.
can be caused by three reasons:
Drying out of the soil.
Lack of nutrients.
Sudden change in temperature.

Root ailment
The most common hibiscus root disease is root rot, caused by fungal infections due to too wet soil. Leaves quickly turn yellow, wither and darken. It is necessary to get the plant out of the pot for a couple of days, cut off the darkened roots. After 2-3 days, you can plant the hibiscus in a pot with renewed soil, water with a solution of carbendazim.
Treatment will help if there are few rotten roots, and most of them are white and firm. If most of the roots are dark and soft, the plant will have to be thrown out.
Other root damage can be caused by pests:
Mushroom gnats. Adult insects are not dangerous. But their white, black-headed larvae can devour plant roots. To fight, you need to sprinkle with insecticide and avoid excessive soil moisture.
Nematode. Large bumps on the roots are a sign of infection with these worms. It is urgent to destroy the roots of the plant, and it is better to discard the flower.

Important! If you do not get rid of pests in a timely manner, damage to neighboring healthy plants is possible!

Non-infectious chlorosis
Non-infectious chlorosis is a very common disease in which photosynthesis and chlorophyll production are slowed down. Chlorosis symptoms:
leaves turn pale and yellow;
the plant does not grow at all or grows very slowly;
elongated stems;
the plant does not bloom.

The most common cause of chlorosis is a deficiency of essential micronutrients. It is possible to determine what kind of minerals the plant lacks by looking at the leaves.
If young leaves begin to change color from the veins, there is a sulfur deficiency.
When a young leaf turns yellow and the veins remain green, then the plant has an iron deficiency.
Nitrogen chlorosis is determined by the yellowed veins of the lower old leaves. Gradually, the leaf completely changes color.
With magnesium deficiency, yellowing begins from the edge of old leaves. The leaf may change color to orange or red.
Zinc chlorosis appears on old leaves with yellow, orange and red specks.

His home treatment: for treatment, it is necessary to determine the type of chlorosis and select a top dressing with a high content of the substance, which the plant needs, or use a complex mineral supplement.
Proper care, soil disinfection, and the use of fertilizers will help prevent chlorosis!

Vascular wilting
Vascular wilting occurs due to viral infection or infection with fusarium and verticilliosis. The twigs wither, dry out, the necrosis goes to the trunk. Soon the plant dies completely, as the disease proceeds very quickly.
For treatment, it is necessary to cut off the affected areas, while healthy tissue is captured. After this procedure, hibiscus is treated with an antifungal drug (Thunder-2, Verticill, Fusarium and others). You can prepare a solution of Trichopolum.

The plant withers
What if the plant wilts? Most often, hibiscus withers after a transplant or a change of scenery. Another reason may be too much light, dry air, or a cramped pot.
A spider mite is a sucking arthropod that settles on the underside of a hibiscus leaf. When infected with a tick, the upper side is covered with yellow spots, the leaves begin to fall off. A white spider web may form on the plant.
How to deal with a spider mite: for prevention purposes, you need to regularly spray the plant. Derris or a systemic insecticide is used for treatment.

Powdery mildew
Powdery mildew is a fungal disease which appears as a white powdery coating on the leaves.
If the affected leaves are not removed in time, powdery mildew can spread to the stems and flowers. Treatment is carried out by spraying with a fungicide or dinocap.

Greenhouse whitefly
Its greenish larvae cover the underside of the leaves, sucking out the juice. A sign of whitefly infection is sugary discharge, yellowing and leaf fall.
The greenhouse whitefly is very difficult to fight, it multiplies very quickly. Once every three days, you need to spray the hibiscus with permethrin-containing preparations.

Aphid
Aphids are small insects that suck sap from the plant. Most often it affects the buds and tips of the shoots.
The method of control is the same as in the case of a greenhouse whitefly defeat - the use of permethrin-containing preparations and derris.

Mealybug
Mealybug - covered with cotton wool. It affects the stems and leaves, which begin to wilt, turn yellow and fall off.
If the lesion is small, you can wipe it with a damp cloth. In case of severe damage, spray with a systemic insecticide every week.

Shield
Scale settles on the underside of the leaves along the veins in the form of small brown plaques. If the plant turns yellow and becomes covered with sweet secretions, it is almost impossible to fight the scabbard.
Adult insects are protected from insecticide by a wax shield. They are first removed with a damp cloth, after which they are sprayed with an insecticide.

Gallica
Gall midge is a midge that first damages hibiscus buds, depositing larvae in them.
The long and blooming life of hibiscus is inextricably linked with its environment.
Important to remember that unfavorable conditions lead to weakening, disease and death.
In order to detect the problem in a timely manner, it is necessary to systematically examine the hibiscus, and use preventive measures against pests.
If you find an error, please select a piece of text and press Ctrl + Enter.

To combat aphids, the following methods are used: first, they should be removed from the leaf and stem using a cotton pad, and then treated with soapy water or special preparations (Aktara, Iskra).

Diseases and their causes

Sunburn

Treatment and prevention

In order to eliminate the effects of sunburn, you need to remove all damaged hibiscus leaves, as well as optimize the conditions of detention - for example, put in a darker place.

To keep your hibiscus leaves safe and sound, follow these simple guidelines:

In this video, an expert will talk about how to save indoor plants from pests and diseases.

Indoor hibiscus: home care, pruning, reproduction

Indoor hibiscus is often referred to as the Chinese rose or the Chinese rose. This is a unique, beautiful, unpretentious plant, with beautiful glossy foliage and large flowers of different colors. Home care for hibiscus is simple, since the plant does not need special conditions. Everyone can handle the cultivation of this flower.

Indoor rose blooms at an early age. Depending on the variety, the height of the plant can be from fifty centimeters to two meters. Flowers are double, simple, monochromatic, multi-colored. Foliage is not only green, but also variegated. Depending on what kind of home care the hibiscus will be like, it can be formed in the form of a trunk, bonsai, or allowed to grow arbitrarily. In the latter case, he will form a bush himself.

Homemade hibiscus

The genus of hibiscus has more than two hundred thousand varieties. Moreover, this includes not only shrubs, but also trees, herbaceous perennial plants that are common in the tropics and subtropics.

China and Asia are considered to be the homeland of the Chinese rose. Different species can grow in gardens in the central part of Russia. Where the plant is very widespread, young shoots are used for food, tea, dyes are made from flowers, and plants are used in medicine. An example is the Sudanese hibiscus, from which the Karkade tea is made. Indoor tropical hibiscus, Syrian, hybrid and Chinese are grown. Hibiscus is a national plant in the Hawaiian Islands. There it is called the flower of beautiful ladies.

Features of rose care

It will take more than one year for the plant to take its place in the room. If you provide hibiscus with proper home care, then this plant will delight with its appearance for many years. This requires:

For planting, use a good, correctly formulated soil.
Provide proper lighting.
Observe the watering regimes.
Apply fertilizers in a timely manner and in the correct dosage.
If desired, carry out the formation of a bush.
Protect from pests and diseases.

The plant needs to be kept in winter and summer. It does not like drafts: from them the leaves begin to turn yellow, the branches become bare, the unopened buds crumble.

Growing hibiscus and caring for this plant at home requires adherence to the rules for selecting a pot: it does not need a container "for growth". There must be drainage in the pot to remove excess moisture.

By purchasing a plant

Having brought home a rose from the store, you should not immediately put it next to other plants. First you need to carefully examine it: stems, leaves on both sides, peduncles - they should not be pests, sticky matter, stains, streaks, rot.

For a room rose with hibiscus, home care begins with an examination. If even the smallest dots, spots, cobwebs, unevenly yellowed leaves are found, it is necessary to immediately treat the plant with insecticides and fungicides.

A transplant after buying a plant is not always necessary. Usually, flower shops sell plants sourced from Holland. They are planted in containers matched to the desired parameters, providing abundant flowering. The root system of plants by the time of sale is well mastering the earthen lump. Hibiscus are planted in peat with a very high fertilizer content and containing growth stimulants. If you immediately transplant the plant into a less nutrient medium, then it will simply die.

If, nevertheless, you decide to transplant the plant into another pot, then this is done by the transshipment method, preserving the entire earthen lump. Of course, it is better not to do this immediately after purchase, but to wait until the end of flowering. During this time, the nutrients from the soil will go away, and the plant will better tolerate the transplant.

After flowering, the transplant is carried out only after removing all the remnants of the old soil from the root system. To do this, the root system is thoroughly cleaned of old soil, but it is not worth rinsing them, since roses are painful for this procedure.

Sometimes, after transplanting, the leaves of the plant are observed to be lethargic. To make the flower easier to survive stress, it is recommended to water it with Zircon. A month after transplanting, you can prune the plant.

Planting soil

Home care for hibiscus begins with the preparation of the soil. Here growers can go in two ways: buy ready-made soil specifically for hibiscus, or make the composition yourself. In this case, you will need: two parts of clay turf, one part of leaf humus and plain earth from the garden, a little sand, vermiculite and charcoal. All components mix well.

For planting, a pot is taken two to three centimeters larger than the previous one. A transplant is carried out every spring.

The plant is carefully removed from the pot. Old dark roots must be removed. To do this, use sharp scissors or another sharp, clean object. Places of cuts are treated with coal.

How to care

To get hibiscus like in the photo, home care boils down to observing the following recommendations:

The place where the plant will be placed is selected correctly. Young specimens are placed on the western or eastern windowsill. Adults are located by the window. If you put the plant on the north side, then it will stretch out, the color of the foliage will fade, the rose will stop blooming.

Temperature. To get a hibiscus flower like in the photo, home care is reduced to observing the temperature regime of growing. This plant does not like heat. Temperatures are considered comfortable: in winter - 14-16 degrees, and in summer - 20-15 degrees.

Watering. Rose belongs to moisture-loving plants. In the summer, it is watered abundantly, until the earthen coma is completely wet. Water is removed from the pallet thirty minutes after watering. Watering is reduced since autumn. After the top layers of the earth have completely dried, they loosen it and only after three days, not earlier, the plant is watered. In parallel with watering, they reduce the temperature of the content: the cooler it is in the room, the less often the rose needs to be watered.

Humidity. Hibiscus loves high humidity and needs to be sprayed. During flowering, this procedure is performed very carefully, trying to exclude the ingress of water on the buds. You can solve the problem of dry air by installing humidifiers, as well as placing the pot on a tray with wet filler.

Priming. It should be light, nutritious, neutral. When self-compiling the land, peat is not used.

Top dressing. In the spring, fertilizers with a high content of potassium and phosphorus are applied. The rest of the time, a complex balanced fertilizer is used, intended for flowering crops. The nitrogen content should be kept to a minimum.

Transfer. Until the age of four, a plant is transplanted every year. As the flower grows, the interval between transplants increases to three years.

Bush formation

To get hibiscus like in the photo, home care involves the formation of a bush. It is best to carry out this procedure after flowering. During formation, remove all shoots that grow parallel to the trunks and are directed towards the inside of the flower. The cuts are made at an angle, directing the outer edge of the bevel towards the top of the crown.

Pruning is carried out in two steps, giving the plant the opportunity to recover. If you immediately remove all shoots, then this can provoke the development of diseases. You can see how to properly crop in this video.

What to do if the rose does not bloom

Home care for a hibiscus flower is simple, although there are times when the plant refuses to bloom. Usually this is due to a violation of the rules for keeping the plant: warm wintering, too large a pot volume, improper watering, incorrect feeding. To stimulate flowering, you must:

In October, cut off all old shoots, leaving three eyes on each.

If the pot is too large, then the plant should be transplanted into a smaller container.

In winter, the plant must rest. To get a indoor hibiscus like in the photo, home care comes down to following the rules of wintering: the temperature should be about sixteen degrees. Lighting should be limited, watering only when necessary.

From the beginning of March, watering is intensified, the earth needs to be thoroughly loosened.

In the spring, the pot with the plant is placed in a warm place, the first feeding is carried out.

Breeding features

Reproduction can be carried out by seeds and cuttings, the latter method allows you to get the same variety of hibiscus. Care and reproduction at home for new plants is practically no different from caring for an adult: it also needs to be watered, transplanted, and controlled by lighting and humidity levels.

Growing a plant from seeds

Growing hibiscus from seeds is not easy and very troublesome. If the seeds are purchased from a store, the chance of germination may be low. Seeds obtained from their plants germinate best.

To obtain healthy seedlings, you must:

Prepare the ground. Peat with sand is used for planting seeds. This mixture is filled into a container.

Seeds are sown with 0.5-1 cm embedment, the soil is moistened. From above, the crops are covered with glass or a plastic bag. The container is placed in a warm place where the temperature is constantly maintained at 25 degrees.

After the appearance of the third true leaf, the seedlings are seated in separate containers.

When growing seedlings from seeds, the plant blooms after a year, but more often after two.

Propagation by cuttings

Reproduction of a rose is easier and faster with apical cuttings. They quickly take root and grow. For successful rooting, you can take cuttings obtained by pruning hibiscus.

Home care involves cutting cuttings up to eight centimeters long. The cut sections are treated with a solution that stimulates root formation, for example, "Kornevin". Then the cuttings are placed in water for rooting. You can plant them directly in the ground. In the latter case, the container with cuttings is covered with a jar or other container. After signs of growth appear, the shelter is removed. Usually the roots appear within a month, and after four - the first flowers bloom.

Growing problems

Sometimes flower growers are faced with the problem of yellowing, drying out of leaves, and dropping of buds. There are other problems with hibiscus cultivation. Home care for this plant in winter and summer requires simple rules, otherwise it can get sick and die.

Yellowing of the leaves can indicate dry air, chlorosis of trees, the presence of pests, and root disease. If the leaves begin to fall off, then this may indicate low humidity, stressful situations, too damp ground, the presence of pests.

With a lack of nutrients, the tips of the leaves begin to fade. When the leaves are rolled, the plant is infected with aphids or other pests. Falling buds indicate a lack of potassium, heat, or damage to the plant by gall midge.

Rose pests

Of the pests, the plant is most often affected by the spider mite. To get rid of the pest, it is necessary to increase the moisture level by washing the plant with soapy water, and also to treat the plant with "Lightning" or another means.

Less commonly, the whitefly affects the rose. The signs of the appearance of the pest are the stickiness of the leaves, yellowing, the presence of white moths on the plant. These insects are difficult to control. Adults are caught with sticky traps; the bush must be treated with Aktara or another preparation three times a day.

Common diseases

From diseases typical of the plant, bronzing leaves and tracheomycotic wilting are distinguished. The first type of pathology is characterized by yellowing of the leaves, the appearance of small breaks on them. The leaves themselves are roughened, wrinkled. When this pathology is detected, diseased plants are destroyed. You can try to isolate the plant and treat it with fungicides.

Tracheomycotic wilting is characterized by shrinking of the tips of the hibiscus shoots. Gradually, the fungus covers the entire plant, and it dies. To save the rose, it is necessary to remove all the affected branches, be sure to carry out multiple treatments with fungicides.

With proper care of the plant, you can get a beautiful bush or tree that will delight for many years with its abundant flowering. Moreover, the older the rose, the more abundantly it blooms.

Hibiscus - home care, watering, feeding, temperature

One of my pets is hibiscus, home care for this gorgeous flower is very simple. Many people like to breed hibiscus at home for their long flowering with huge bright flowers. Sometimes some people have problems with the plant, so today we will analyze the mistakes associated with caring for hibiscus.

Indoor hibiscus or homemade Chinese rose

By the way, many people mistakenly call the stem-rose hibiscus, the correct name of which is mallow. Hibiscus is widely known to indoor plant lovers like the Chinese rose or Chinese hibiscus.

The flower came to Europe in the 18th century from Asia Minor and immediately won love for its unpretentious character and magnificent flowers.

On the islands of Oceania, India, China, Malaysia, it is considered the main attribute of home comfort and family hearth. In many films, you probably noticed how oriental beauties decorate their hair with large luxurious flowers, this is hibiscus.

The plant itself is a shrub, it can quickly "grow" about three meters. It looks very nice if it is formed with a standard tree. Sometimes you can see these in large office halls.

In the East, in ancient times, hibiscus flowers were used to make dye for dyeing fabrics.

Hibiscus at home

The shrub has a smooth trunk, rather strong, dark green shiny leaves, rather large, flowers are simple or double, very large, resembling a bowl with five petals, strongly open, in the center there is a long pistil with bright yellow stamens. The color ranges from white to dark purple.

Hibiscus - home care

Hibiscus, again, is quite undemanding, but without proper conditions it can create some problems and stop blooming. Observing all his whims is quite simple, the main thing is to know them.

Lighting for hibiscus, how to choose a place for a flower

The Chinese rose loves the sun, but it is better to refrain from such a place where direct sunlight will fall on the plant, especially in the middle of the day. Then the leaves become faded and begin to fade, lose turgor, the soil begins to dry out faster.

My plant is already large enough and the pot in which the hibiscus grows cannot be placed on the windowsill, it stands to the right of the east-facing window, it feels quite comfortable.

Watering the hibiscus

This indoor plant must constantly have moderately moist soil, drying out threatens with leaf fall, and not only. In general, if you water your Chinese rose, both leaves and buds fall off, of course, it will not bloom.

Watering the shrub is often required during the flowering period, it blooms with good care for a rather long time, from spring to autumn. It is very important here to constantly monitor the moisture content of the soil.

In winter, the amount of watering is reduced, only as needed, when the soil begins to dry out slightly. Again, this is an important condition for flowering.

I would like to speak separately about the quality of water. Ice cold is completely unsuitable, right from the tap, so as not to shock the plant. Be sure to be separated and filtered so that there are as few impurities as possible in it. Due to watering with tap water, hibiscus often suffers from chlorosis and begins to lose leaves.

Air humidity

Dryness is scary for hibiscus, especially when the temperature starts to rise in summer. It makes sense to arrange for him to spray from a sprayer with water at room temperature a couple of times a week.

In winter, again, excess moisture is not needed, especially since the plant will be in a cool place. It is also necessary to spray the flower with settled or melted water, at room temperature.

Temperature for hibiscus

The flower loves the sun, but not the heat, more than 25 blooms begin to decline, the buds fall off. So 20-22 degrees is optimal for him. In summer, you can take it out on a balcony or an open terrace, so that there is no direct light and draft.

In winter, a necessary condition for future flowering is a drop in temperature to + 15 degrees. But do not overdo it, below + 12 the flower will not stand.

Hibiscus feed

The entire flowering period requires top dressing. Once a week is a must. I alternate a complete complex fertilizer for flowering indoor plants with organic ones, make a solution of a mullein one to fifteen, water it with an infusion of nettle and wormwood.

In winter, it is enough to feed once a month with potassium-phosphorus fertilizer, but this must be done, as this helps the plant to form buds for flowering.

How and when to transplant hibiscus

It is advisable to transplant hibiscus immediately after flowering. It can be transplanted in the spring, before the flowers bloom, but there is a risk that it will drop all the buds.

For transplanting, you need to choose a pot slightly larger than the previous one. Hibiscus, like the handsome cyclamen, does not like spacious containers; it is better to increase the diameter gradually. In a large pot, the crown will begin to grow strongly, but there will be no flowering.

For transplantation, it is necessary to prepare fertile, moisture-absorbing soil. Be sure to place expanded clay drainage at the bottom of the pot. The composition of the soil mixture can be as follows:

Watch for soil acidity and nutrient availability. An insufficient number of them leads to slow growth, the leaves fall off, the flowers become defective.
Low or high temperature in the room will cause the leaves to curl.
Improper lighting. The stems become thin, the leaves dry out, the flowers do not develop.
Water the flowerpot correctly. Excess moisture contributes to the development of rot on the roots, and a lack of moisture contributes to the yellowing of the leaves.

Please note that some pest control substances are dangerous not only for humans, but also for pets. Consider this and carry out treatment measures in the fresh air and store toxic substances away from children and animals.

Let us consider in more detail the types of diseases and measures to combat it.

Viral diseases

The main feature of this type of indoor plant disease is slowdown in growth, however, it should be noted that the plant rarely dies. This fact does not allow identifying viruses at the onset of the disease and starting the fight against the pest in time.

The most common viruses are aphids and thrips. The treatment of indoor plants is cardinal - complete destruction, because there are no drugs for their treatment. External signs of the disease are the appearance of mosaic spots on flowers and some leaves.

Bacterial diseases

1. Rot. Plants with fleshy stems and leaves are especially affected by decay. Excess moisture and nitrogenous fertilizers contribute to the development of the disease. Most often cyclamens, saintpaulias and sansevierias are subject to decay.
2. Withering. With this disease, the stems first wither, and then the whole plant. On the cut of the shoot of such a plant, there is no brown ring, which is a distinctive feature of a fungal infection.
3. Spotting. It is manifested by the presence of dead areas of the leaf. The spots have clear boundaries, in contrast to the fungal spot.
4. Bacterial cancer. The disease manifests itself in the form of growths similar to tumors on the roots and shoots. Their spreading through the plant leads to its death. Most often, the disease affects begonias, Kalanchoe, succulent spurge.

Chemicals are not effective against bacterial infections. The main thing - take preventive measures, monitor soil moisture. When root decay appears, it is necessary to reduce the abundance of watering, and if the entire houseplant is damaged, it must be completely destroyed along with the earth and the pot.

Houseplants susceptible to attack by many pests, such as:

Cyclamen mite almost does not differ from the usual, only a smaller size. The main symptoms of this pest are: wilting of flowers, twisting of plant stems, curling up the edges of the leaves, growth stops. The accumulation of pests on the underside of the leaf resembles dust in appearance. Balsams, Saintpaulias, cyclamens most often suffer from ticks. To combat, regularly treat the plant with insecticides and tear off the leaves affected by the disease.
Shield is an immobile plaque under which the female is located and breeds offspring. If there is an extensive pest colony, the plant must be destroyed by burning. Young scale insects can be removed with a cotton swab dipped in alcohol.
Mushroom gnats... Adult pests fly around the plant, and insect larvae cause danger. They mainly feed on the organic content of the soil, but it happens that they also affect the root system of plants. Pests appear mainly at high soil moisture. To fight insects, use the preparation "Mukhoed", do not water the plant for up to 5 days.
Mealybug is an insect similar to wood lice and feeds on the sap of leaves, which leads to their deformation and drying out. Their secretions attract ants and provoke the formation of molds. For small areas of the lesion, use a cotton swab dipped in soapy water. Also, in the fight against the pest, you can use an infusion of tobacco, garlic or an alcoholic solution of calendula, which can be purchased at the pharmacy. Their chemicals will help to cope with the problem "Metaphos" or "Aktelik". Mealybug mainly affects geranium, azalea, lemon, palm, asparagus, fuchsia, fern and other plants.
Whitefly resembles a small white moth. Whitefly eggs can be seen as small gray grains. As a result of their life, a sooty fungus forms on the leaves of plants. White spots form on the affected leaf, it turns yellow and falls off. The most dangerous thing about the whitefly is that it very quickly produces offspring and carries viral diseases. Fuchsia, pelergonia, begonia, jasmine, hibiscus and other indoor plants suffer from it. It is difficult to defeat a pest. Destroy eggs and larvae regularly, and catch adults with fly sticks. Prepare a 1% green soap solution and apply it to the bottom of the leaves once every few days. Perform up to 5 treatment cycles. From the folk methods of pest control, an infusion of garlic is recommended. If the result is negative, use a solution of nicotine sulfate or parathion.
Aphid- small greenish insects that feed on plant sap and like to live on the tops of green shoots and on flowers. The secretion of aphids attracts ants and provokes fungal infections. Spray the plant with a permethrin-containing insecticide or use derris. Re-process the indoor flower after a few days.
Spider mite often settles on the inside of the leaf of plants, while forming yellow spots. Over time, the leaf falls off, and cobwebs may appear on the stem and leaves. To destroy the pest, you need to apply derris to the plant several times.

Diseases caused by fungi

Purchase indoor plants from specialty stores or nurseries.
Choose disease-resistant flower varieties.
Seeds for planting must be sorted and disinfected without fail.
Each type of indoor flowers needs its own care conditions, keep them.
Examine leaves and flowers regularly for disease.
If a plant damage is detected, urgently isolate it and start measures to combat the disease.

It is worth noting that it is better and easier to prevent the spread of pests than to treat indoor plants.

Hibiscus (Chinese rose) - care: reproduction, pruning, transplantation, fertilization, disease.

Recently, many are fond of breeding indoor flowers. It has become stylish, quite fresh and trendy. Many people turn their apartments and houses into real greenhouses. Some prefer flowering or ornamental plants, others are fond of growing vines, and still others like indoor bushes and trees. One of the most beautiful indoor plants is hibiscus, popularly called the Chinese rose. It is considered a house tree, but it can grow as a small, lush shrub. Growers love hibiscus - caring for it is very simple.

The hibiscus has a luxurious crown, dark green leaves, pointed towards the end and similar to birch leaves. Under suitable conditions, the plant reaches three meters in height. Bright funnel-shaped flowers look great. They are very large and come in a variety of colors, but the most common varieties are red or crimson. There are types with regular, semi-double or double flowers. The hibiscus bud blooms for a relatively long time, but the flower itself in the open state lasts only a few days.

Hibiscus - care. How to care for hibiscus.

The Chinese rose (hibiscus) is light and moisture-loving, therefore it requires a sunny location and regular watering. When the earthen coma dries up, it begins to shed its leaves. But it is not worth pouring the soil either. The plant needs to be sprayed often, and the pot should be placed on a tray with water (carefully so that water does not fall into the tray, but only to increase moisture). Hibiscus is a shade-tolerant plant that can fully grow in light partial shade, but at the same time it will produce much less flowers, therefore, try to illuminate it as much as possible.

Fertilizer for hibiscus.

Hibiscus is fed from spring to August once every 10 days, alternating mineral fertilizer for hibiscus ("Gilea" for decorative flowering indoor plants) with organic fertilizers ("Fertimix BIOHUMUS for decorative flowering plants"). If you want to increase the deciduous mass of the Chinese rose, you can feed it with a fertilizer with a high nitrogen content (for example, Fertimix - active growth fertilizer for hibiscus growth).

Chinese rose - pruning, transplanting and reproduction.

Young hibiscus need to be replanted every year in slightly larger containers. The branches during transplantation should be shortened by two-thirds. From this procedure, the bush will become more decorative, and it will grow more lateral flowering shoots. The soil mixture is prepared from sand, humus, peat and turf soil, sand with the addition of small pieces of charcoal. A purchased mortar of proven quality is also suitable. Later, the Chinese rose is transplanted as needed. In the spring, the topsoil is changed to fresh and fertile soil. Fertilizers for hibiscus after transplanting are not needed.

Cuttings left over from pruning are often used to grow new hibiscus. Reproduction by cuttings is very easy. It is better to do this in the summer. Cuttings obtained from young shoots (2-3 internodes) are placed in mini-greenhouses or under a jar for about 25-30 days in fertile soil (Before planting, it is advisable to treat the cut with a fertilizer with a rooting effect). The next stage is the transplantation of hibiscus to a permanent place of residence.

Hibiscus pruning is done after two years of age and has a beneficial effect on the appearance and health of the plant. It is after pruning that new young shoots appear and a beautiful bush is formed. First of all, you need to remove a quarter of weak, sick or twisted shoots, leaving about two centimeters from the bud with leaves.

Care errors. Hibiscus diseases, pests.

Dry air or improper care can lead to hibiscus diseases and pests such as:

In this case, you can use the drugs "Doctor Foley" - effective remedies for pests of indoor plants and fungal diseases.

There are many factors (such as unfavorable conditions or changing growing conditions) under which a Chinese rose can shed its buds and leaves.

But do not be very upset if you know exactly how to care for hibiscus, soon new young leaves will appear on the tree.

gileya.kherson.ua

Why hibiscus is sick and how to help it

06/07/2017 Leave a Comment 3,897 Viewed

Hibiscus often decorates not only our homes, but also offices, shops, and service premises. This plant is, in principle, unpretentious, but it has small enemies: pests and diseases, which sometimes seriously annoy the Chinese rose. Knowing what the diseases of hibiscus are, analyzing their causes, you can prevent diseases, avoid problems by caring for the plant correctly. If troubles could not be avoided, urgent action must be taken.

Hibiscus Disease: Some Causes

The most common mistakes in caring for a Chinese rose that beginner growers sometimes make are as follows:

Excessive watering, which caused partial root rot;
Hibiscus stands in the wind, in a draft, or in an area of direct sunlight;
The plant is in a hot room, while the air is dry;
The hibiscus was not transplanted on time;
Hibiscus leaves are covered with dust;
Complete or partial absence of spraying (especially in summer);
Water for irrigation is of poor quality, not settled and with impurities;
Weak lighting, the plant is in a dark place;
Excessive feeding;
Lack of feeding.

In addition to the above, you need to take into account that you cannot put hibiscus next to diseased plants, such contact will lead to damage by pests, to various diseases.

Hibiscus leaves: why they get sick

Timely transplantation, lack of contact with already sick pets, regular cleaning of dust layers, as well as regular application of suitable fertilizers can help prevent the further development of chlorosis in a timely manner. Sometimes the plant must be bathed under an indirect shower stream, carefully covering the ground with a piece of polyethylene. The new plant needs to be quarantined.

Iron deficiency

Hibiscus sometimes completely sheds its leaves. This phenomenon is a sign of iron deficiency. The most affordable way to help a plant if the hibiscus has completely fallen out is to spray it with an iron chelate preparation. The reason for the disease may also be that the fertilizer for the pet was chosen incorrectly: it contains little or no nutrients and trace elements necessary for hibiscus.

Sunburn

As a rule, all hibiscus perfectly tolerate the direct rays of the sun, however, if the Chinese rose lived for a long time in a shady place, and then it was very abruptly placed on a sunny windowsill (without an adaptation period), then sunburn may occur on the leaves. Outwardly, it looks like slightly yellowish or even red dryish spots. All burnt leaves will have to be removed, and the plant should be taught to the bright sun not so sharply.

Sometimes it happens that the leaves are accidentally pressed against the surface of the glass, in which case a burn may also appear. Sunburn is the main reason hibiscus leaves curl. In order to prevent this phenomenon, all plants that are grown in greenhouses should be taken out in the daytime sun for a couple of hours daily. If at home the hibiscus stood in the shade, then you must also put it in the sun, for a short time, and then remove. Gradually, instead of burnt leaves, new ones will grow, already completely healthy.

Adverse symptoms

If hibiscus leaves fall, then most likely the room is too dry, and spraying is either not carried out, or they are clearly not enough. Also, the cause may be drafts, replacement of lighting (sharp), other stress.
A sharp yellowing of a large number of leaves can mean both infection with some pests, and diseases of the root system, chlorosis, or insufficient humidity in the room.
If the tips of the leaves wither or dry, then there is a shortage of trace elements (for example, nitrogen or phosphorus), other nutrients, and insufficient feeding of hibiscus.
When the leaves become very lethargic, this means that the temperature allowed for the maintenance of the plant is exceeded, which is clearly higher than the norm.
A sharp yellowing in combination with regularly falling leaves can often mean excessive moisture in the roots in winter, or vice versa, a weak level of humidity in the room.
The so-called vascular wilt of hibiscus also deserves close attention. The rapidity of the development of the disease sometimes does not make it possible to take the necessary measures in time and save the plant. It is necessary to cut off the diseased parts of the hibiscus very quickly (partially capturing healthy branches), then treat the whole plant with any antifungal drugs.

Lack of micronutrients

Separately, it is worth dwelling on the lack of nutrients, poor plant nutrition. So, what if the hibiscus clearly lacks potassium or magnesium, zinc? When yellow spots appear on the hibiscus, you just need to replace the soil or apply special preparations that will compensate for the lack of minerals. For example, if the plant lacks zinc, the leaves become too small, and small specks soon appear on the leaves.

If the hibiscus lacks sulfur, then the edges of the leaf look brown, and if there is not enough magnesium, then chlorosis may appear on this plant, which occurs between the veins. The leaf becomes, as it were, marbled, partially white, in some places dark spots may appear. The lack of potassium is most clearly expressed in the partial or complete dying off of the edges of the leaf, this phenomenon is outwardly very similar to the burn mentioned above.

Aphids, gall midges and other pests on hibiscus

Some inexperienced growers do not know why hibiscus leaves curl. Often this phenomenon means that the plant is damaged by aphids or some other pests dangerous for the plant. For this reason, it is extremely important not to wait for their appearance, but to periodically carry out preventive measures, it is especially important to do this before taking a pet out on a balcony or outside in a warm season, and before bringing plants into a room in the fall.

If aphids appear on the hibiscus, which are attracted by young and juicy shoots, then this will be immediately noticeable, since the leaves become a little sticky, then they begin to curl, or bend. In this case, all insects are first removed by the usual mechanical method (using a tampon and laundry soap). After this procedure, the hibiscus must be carefully treated with special aphid preparations that are commercially available. You can also remember the folk methods, but they are not always reliable and effective.

If the usual means and prevention of diseases that were caused by pests were ineffective, while the hibiscus leaf is curled or affected in another way, additional methods of its treatment should be carried out. For example, in case of aphid infestation, spraying with insecticides (for example, Actellik) can be done. After two treatments carried out at intervals of a couple of weeks, as a rule, the plant returns to normal.

Other hibiscus pests include:

Gall midge, which causes partial fall, a sharp yellowing of leaves and buds in indoor hibiscus, sometimes they do not even have time to fully bloom. With a careful examination of the plant, in the buds you can see the smallest eggs of this midge, from which worms then appear, which eat the bud inside.
If the plant is affected by a whitefly, the leaves turn yellow, become sticky and gooey, and the insects themselves can be found on the underside of the leaves. Whitefly is excreted using potassium soap, as well as special preparations (Aktara or Karbofos, as well as Iskra and Tanrek).
If a tea rose has a waxy white discharge (on cuttings, on leaves), then the plant is affected by a worm, the leaves can be treated with mineral oil. During the procedures, the plant should stand in a shady place.
If brownish bumps are noticeable on the leaves, then this may be a scale insect.

It is good to remember the folk remedies with which our grandmothers washed the leaves of domestic plants from pests, aphids and scale insects. For example, red pepper (dry) is poured with water in a ratio of one to two, boiled for an hour and filtered. Ten grams of the solution is diluted in one liter of water with laundry soap, which is used to treat the whole plant. Also, in one liter of water, you can boil fifty grams of dry mustard for 15 minutes. The resulting broth is diluted in 20 liters of water and sprayed on the affected plant.

More about pests: spider mites on hibiscus

If the air in the room is dry, and spraying is not carried out regularly, then good conditions may arise for the development of ticks on hibiscus, their colonies multiply quickly, feeding on juice from the leaves. The appearance of a spider mite can very quickly completely destroy the plant, so you need to know the characteristic signs of its presence. First of all, these are spots on the leaves, they can be brown or black, in fact, they represent the excrement of the pest.

The upper parts of the leaves are completely covered with small yellowish specks, the affected leaf loses its natural color, then becomes covered with a web of cobwebs, then falls off. Mites migrate along the cobweb and destroy the entire plant.

So, if you carefully observe all the necessary conditions for growing a healthy plant, then it is unlikely that diseases and pests will bother your hibiscus so much. Proper care is the key to an attractive appearance, rich flowering, as well as strong immunity, which will help the plant to cope on its own even with the invasion of pests.

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