Why is hibiscus sick and how to help it. Sticky drops on hibiscus leaves

Diseases of indoor plants with sticky leaves immediately reveal their cause and pathogen.

Reasons for the appearance of sticky plaque

A sticky leaf in any plant means that organic secretions are deposited on its surface. big amount carbohydrates.

Have healthy plant this is possible only if something that adheres to the outer covers of the leaf has gotten onto the leaf blade from the outside. This happens rarely. And if all the leaves of a plant suddenly become covered with something sticky, these are signs of a pathology that develops so quickly that soon not only a few leaves and the whole plant are covered with a sticky mass, but also the nearest space around. This indicates the presence of a constant process of violation of the integrity of the leaf blade.

Possible consequences

This phenomenon has causes and consequences. The reasons are simple - microorganisms start on the plant that damage the leaves. As a result, juice flows from the wound of the leaf all the time.

Reaching a certain number, the pest forms a sticky cover on the leaves. Since he drinks the juice, his secretions are not only runny but sticky. As a result, the sheet is covered with a continuous layer of the mixture. own juice with the secretions of the organisms that eat it.

This process can have the following consequences.

1. The plant loses water and nutrients.
2. Fungi, bacteria, viruses can settle on permanent damage, which can cause a new disease.
3. The sticky cover clogs the stomata, making it difficult for respiration and water evaporation.
4. Since the plant is not provided with sufficient oxygen and carbon dioxide, the formation of organic matter in the process of photosynthesis becomes unproductive. This leads to leaf loss and gradual wilting of the entire plant.
5. Closed with a sticky substance, the stomata cease to evaporate water. As a result, the movement of water from the root hairs to the leaves is slowed down. For this reason, the supply of minerals to the terrestrial organs of the plant also slows down. This is the reason for the deficiency of minerals. The intensity of bio and photosynthesis decreases. As a result, the plant ceases to bloom and bear fruit, gradually dying.

Thus, a sticky coating on the leaves of a plant is a signal of trouble. Who is the culprit of these troubles?

Organisms that damage the leaf blade

It is difficult to identify a pest that destroys a plant. These are mainly insects or mites, that is, multicellular organisms. However, they are so small that it is difficult to see them. In addition, only a specialist can determine the type.

And nevertheless, it is necessary to know the enemies of plants. Here is a rough list of them.

1. Spider mites are the most common pests of indoor plants. They are arachnids. Their presence is usually detected by indirect signs. Leaf stickiness is the first sign. Then subtle cobwebs appear. If the plant is in bloom, the cobweb will concentrate on the flowers. Chrysanthemums, citrus fruits, and roses suffer most from spider mites.
2. Scabbards, or false scutes, are small insects from the Hemiptera family. They got their name for the fact that they look as if they were covered from above with a dense protective shell, similar to a shield. Compared to the mite, they are quite large - they can be seen with the naked eye. They lead a sedentary lifestyle. If you try to remove them from the plant, you can feel resistance. The feeling of adhesion of the scabbard to the surface of the sheet is created. They usually concentrate near the veins or on a young shoot.
3. Aphids for indoor plants are not as popular as the previous ones. The reason is simple - these insects are larger, so people notice them faster and take action. However, they are colored to match the color of their food base, which reduces the likelihood of early detection. Infection with these insects occurs quickly. This is due to their ability to fly. If previous pests migrate through the soil, then these can fly to new plants.
4. Mealybugs are members of the same family as the scale insects. These worms are not worms at all. In size and lifestyle, they are more like aphids. A person who is not versed in the biology of invertebrates usually does not see the difference between aphids and a scale insect. However, there are some indirect signs. The accumulation of these small white insects creates the effect white bloom as if the plant was sprinkled with flour.
5. Whiteflies are small white butterflies. They are usually concentrated on the underside of the leaf, since the cover is less hard there.

These butterflies lay their eggs where they feed. Translucent larvae emerge from the eggs, bite into leaves, move along their surface, leaving a layer of sticky sweet bloom. If the concentration of larvae is high, and the leaves are not processed, then the plaque turns from green to black. This is due to the fact that fungi begin to multiply in a sweet environment.

How to deal with the scourge?

If you find white dots, brown shields, cobwebs, sticky bloom on the plant, then you don't need to look for the culprits, because the control measures are the same. They boil down to the following actions:

The detected pests can be removed. Wash the plant with solution laundry soap(72%). You can use special green soap.

In a soapy state, the plant can remain no longer than 24 hours. After that, the soap deposit must be washed off, since the soap prevents gas exchange between the plant and the atmosphere.

Repeat the procedure after 3 days.

In some cases, soapy procedures do not help. Then you have to turn to special drugs. Fitoverm belongs to such means. According to the instructions, it is used to treat indoor plants if they are affected by aphids, mites and thrips.

It is easy to use Fitoferm. It is necessary to dissolve the contents of the ampoule in water. Attention should be paid to the toxicity of the drug to humans, therefore, the treatment must be carried out with all precautions and outside the living quarters, since there will be an unpleasant odor.

After 7 days after the first treatment, the entire procedure must be repeated. This is due to the fact that most pests live in the soil, and this drug does not damage them, so the next generation appears.

After about 30 days, you will understand whether Fitoverm helped or not. If not, then it's time to take more radical action.

The drug "Doctor" (thiamethoxam) in the form of briquettes. Distinctive feature this tool is the destruction of pests in the soil. For this, briquettes are introduced into the soil. There they gradually dissolve, killing larvae and adults - aphids, worms, scale insects, thrips, whiteflies.
The entire series of "Commander" preparations has universal properties. They can be sprayed on crops growing in open ground, in pots on the windowsill. These are water-soluble crystals that are effective against aphids, whiteflies, thrips. The concentration of the solution must be selected for specific conditions in accordance with the instructions.
Some people put a pot with an affected flower in a plastic bag and spray it inside with dichlorvos, then the bag is tightly closed for several hours.

This method can give its results, but dichlorvos is dangerous for people and can burn the plant, it acts for a short time, killing only active insects and ticks. The larvae remaining in the soil do not die.

There are many means and methods of plant pest control. The main thing is prevention. Be careful with your soil selection.

There are several diseases that affect different parts of the flower:

Differences from pest damage

Possible consequences

The consequences of diseases for the Chinese rose directly depend on which disease struck and at what stage it was affected. If the disease was detected on time, then the plant can still be saved by taking urgent measures... The main consequences of diseases remain:

loss of decorativeness;
stunting;
death.

When is resuscitation possible and when not?

Resuscitation for a plant is an emergency measure that will save the flower from death. It makes sense to carry out such events if the state of the rose is not neglected. Then stressful situation will allow him to activate the processes of growth and development. If the disease is running, then it is useless to carry out resuscitation measures.

Instructions on what to do at home

If a Chinese rose dries up, then the first thing to do is to normalize its watering. From spring to autumn, the flower needs moisture. Use settled water for irrigation room temperature.

The next reason for the plant to dry out is mites.... To combat them, you can try these drugs:

These products are toxic, so be sure to open a window and wear gloves and a respirator before using them.

The processing looks like this:

First, water the flower thoroughly, and treat the stems and leaves with soapy water.
Now you can proceed to spraying, and use several drugs in turn.
Re-processing should be carried out in 7-10 days.

As for folk remedies, they are effective only at an early stage of infection. Popular recipes:

Onion infusion... For 20 g of husk, 1 liter of water. Insist 5 days, spray the bush with infusion, wipe the leaves and branches.
Infusion of garlic... Pour 2 large and chopped heads of garlic, pour 1 liter of water and leave for 5 days. Before use, dilute the infusion with water in equal proportions and spray the bush.

Hibiscus withers

If the plant begins to wither, then it can be very difficult to cure it. But you can try if you use the following recommendations:

Remove all dried parts of the plant, slightly touching its healthy parts.
Treat the rose with antifungal drugs: Fundazol, Topsin, Dezavid. You can use a folk remedy - Trichopolum solution (2 tablets per 1 liter of water).
For additional stimulation of the rose, treat it with such preparations: Epin, Zircon, Domotsvet.

IMPORTANT: If at the initial stage it was not possible to cure the hibiscus, and it still withers, then you will have to get rid of it.

The curling of azalea leaves occurs as a result of the activity of the whitefly... To combat it, drugs are used:

When working with drugs, use gloves and ventilate the room well!

Foliage falls

Shield... The leaves are mechanically cleaned with a soapy lip. Next, process 0.155 Actellik solution (1-2 ml per 1 liter of water).
Aphid... To combat it, spraying with Dirris, Fitoverm, Decis, Aktellik is used. If the lesion is strong, then repeat the treatment after 10 days.

Turns yellow

To prevent the appearance of yellowness on the leaves or get rid of it, you will need to comply with the following recommendations:

Watering should be moderate, avoid the presence of standing water.
No draft.
Timely subcortex.
Lack of direct sunlight.
Leaf processing special means for prevention.

ADVICE: In case of a viral infection, it is pointless to carry out treatment, the diseased flower should be immediately removed so that the rest of the plants do not become infected.

Does not bloom

If the hibiscus does not bloom in any way, it needs to be stimulated.:

To stimulate flowering, it is necessary to cut off old branches in a timely manner.
Change the old soil to a new one.
Place the plant in a sunny place.
Do not forget to apply fertilizers to stimulate new shoots and buds. But to reduce nitrogen-containing compositions.

Watch a video about the reasons for the lack of flowering of hibiscus and how to fix it:

If the Chinese rose is on the verge of death, then an urgent resuscitation is needed. It includes the following procedure:

At high humidity and good lighting will awaken dormant buds and begin to develop root system. Zircon should be treated every day, as it restores turgor.

Prophylaxis

To prevent the development of a second disease, it is necessary to take following measures prevention:

Temperature indicators should not go beyond the normal range - 18-22 degrees Celsius. Drying out and waterlogging are unacceptable.
Timely pest control. It is they that lead to deformation of the leaves and the development of diseases. For processing, use Peretrum, Aktofit.
It is best to use mineral complex fertilizers to apply nutrient formulations regularly.
The air in the room should be moderately humid, but not dry.

Care

Temperature... The Chinese rose is a thermophilic plant. In spring and summer, the temperature will be 25 degrees Celsius, and in winter - 15-20 degrees. If the temperature is below 10 degrees in winter, the leaves will fall off. In the summertime, put the flower on the balcony, protecting it from rain and wind.
Lighting... Hibiscus is a light-loving culture. For him, diffused light is important. If in the summer direct sunlight falls on the flower, then this is fraught with the development of a burn. Grow the plant in east or west windows.
Watering... In spring and summer, the Chinese rose needs abundant watering. Use separated water and at room temperature. Avoid waterlogging. In winter, watering is moderate. Wait until the soil is completely dry before the next irrigation. It is imperative to provide for high-quality drainage.
Air humidity... In summer, hibiscus needs high humidity. It is useful for him to carry out frequent spraying. Only the water should not fall on the flowers, otherwise they may fall off. Less moisture is required in winter. But carried there central heating, then spraying is carried out every other day.
Top dressing... From spring to autumn, apply complex nutrient compositions intended for flowering indoor plants. Do this every 2 weeks. Beginning in August, reduce nitrogenous fertilizing.
Pruning... Cut tightly chinese rose every spring. This will allow the bush to acquire a compact shape with a large number of buds. If the plant begins to stretch strongly, then cut it off during the growth period. By pruning, the flower can take the form of a shrub or tree.

Conclusion

The Chinese rose, like other decorative crops, is affected by certain diseases. The main task of the grower is to detect the problem in time, understand the reason for its development and move on to effective treatment at home. Only quick and well-coordinated actions will help save both the flower itself and its decorative appearance.

Hibiscus is a popular plant that can give its owner a cause for concern. For example, when the tips of the leaves of a plant dry out and it gradually withers. This can happen if your variegated hibiscus is attacked by diseases and pests. In this article we will tell you why hibiscus leaves curl, what to do and how to treat a flower at home.

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 sticky drops over their entire surface. In addition to whitefly, the plant is threatened by other pests of hibiscus: aphids, gall midges and spider mites.

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 characteristic features 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's not about different types rot, when the plant has rotted or its roots have dried up, and 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 him in a place where he will be under their direct influence, be prepared to accept the consequences in the form 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- 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 tell you how to save houseplants from pests and diseases.

What do the diseases look like in the photo and what to do?

Sticky drops

Sometimes, hibiscus can release drops on its own and this is not a pathology, but the localization of these secretions should be at the junction of the petiole with the leaf.

In other cases, the appearance of a sticky plaque indicates that the plant is damaged by pests: aphids or scabbards. And if aphids can be seen with the naked eye, then the scabbard betrays its presence only with sticky secretions.

To help the flower, you need to give it a shower. In this case, the soil must be covered with a waterproof film so that washed off pests do not get into it. Then the hibiscus must be dried and treated with an insecticidal preparation, according to the instructions.

Stains

The appearance of small, yellow, watery specks indicates the defeat of the hibiscus by bacterial spotting. The shape of the spots is irregularly angular, and along their edge there is a light green or yellow border. Bacteria cause this ailment and treatment should be carried out with the use of antifungal drugs.

Also, the manifestations of bacterial lesions can be the so-called bacterial burns. The spots in these cases are quite extensive, shapeless, and black. Treatment is also carried out with antifungal drugs, untimely assistance to the hibiscus will lead to its death.

The leaf plates have fallen

The reason for this symptom may be:

Insufficient, or, on the contrary, excessive watering.
Too high or low temperature air.
Lack of lighting.
Drafts.

The improvement of hibiscus, if the ailment has arisen due to the above reasons, consists in adjusting the conditions of detention.

Also hibiscus can shed leaves due to defeat spider mite, or due to excess content nutrients in the ground. In the first case, insecticide treatment will be required, in the second it is necessary to adjust the composition of the soil.

White bloom

The plant is affected by mealybug or powdery mildew:

In the first case, it is a pest.
In the second, a fungal disease.

The waste products of the mealybug visually look like lumps of cotton wool on the leaves and stems, treatment consists in washing the plant and treating it with insecticidal preparations.

For treatment powdery mildew, which creates the visual effect of sprinkling the leaves with flour, antifungal drugs are used.

Black spots

A disease with this symptom is called dropsy. Black dots appear from a combination of waterlogging and cold. This defect can be corrected by restoring conditions acceptable for hibiscus.

Leaf plates drooped

If the plant has dropped leaves, it either lacks moisture, or it is very waterlogged. Sometimes this symptom can appear at a high temperature. Adjustment of conditions of detention will help to save hibiscus from malaise.

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 symptoms of the disease are yellowing and leaf fall.

Chlorosis can be of two types - infectious and non-infectious. The most common non-infectious form. The reason for the occurrence lies in the wrong composition of the soil - excessive or insufficient quantity nitrogen, potassium, iron and magnesium.

The symptoms of the disease are as follows:

with a lack of iron, the leaves turn yellow and fall;
potassium deficiency causes thinning of branches, lack of flowering or pale color of flowers;
lack of magnesium or nitrogen appears as yellow or white spots on the leaves.

The causative agents of infectious chlorosis are fungal microorganisms and viruses. Symptoms accompanying the disease:

yellowing and falling leaves;
general weakness of the plant;
lack of flowering.

How to treat chlorosis? For the treatment of non-infectious chlorosis, it is necessary to bring the composition of the soil to an optimal state for hibiscus.

Infectious chlorosis is best prevented by keeping the flower out of contact with diseased plants.

As for the treatment, optimal solution there will be a transplant of a previously washed plant into a new, disinfected container with fresh soil. Also special drugs designed to treat infections will be effective.

Twisting

It is observed when hibiscus is affected by fungi of the genus Verticillus, or Fusarium. After the leaves curl up, they die off and only the top remains of the plant. After the defeat of all leaves, rapid drying of the trunk and death of the flower follow. For treatment, you must use antifungal drugs.

The timely noticed ailment of the pet, hibiscus, will help prevent critical conditions and prevent bitter disappointment from the death of the flower.