Causes of Chinese rose diseases, diagnosis and treatment

Chinese rose (hibiscus) belongs to the family Malvaceae. This flower grows in Southeast Asia. But even in the conditions of the Russian climate it is not difficult to grow it.

Only frequent mistakes of flower growers lead to the fact that the plant begins to hurt. If the disease is not determined in time, its cause and treatment is not taken, then there is a high probability that the hibiscus will die. Consider why hibiscus leaves curl or wither, why other ailments occur, and talk about treatment.

What are hibiscus diseases?

Definition

Hibiscus disease is a variety of deviations in its growth and development, as well as in a violation of the decorative appearance. Absolutely different parts of the plant may be affected depending on the type of disease and the cause of its development.

Types of ailments

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

1. Rust. With this ailment, the plants bend and thicken the shoots. With the onset of spring, orange dust forms on the stems of the buds of the buds and the root neck.
2. Powdery mildew. This is a fungal disease in which a powdery mildew forms on young leaves, shoots and buds. In addition, the affected parts of the flower thicken and bend.
3. Beginning in the second half of summer on the leaves dark brown spottingwhich takes various sizes. The leaf plate turns brown, and the leaves fall.
4. Bacterial cancer. On the root neck and roots of a Chinese rose, growths of different sizes are formed. At first they are barely noticeable, but then their sizes reach several centimeters in diameter. The growths are distinguished by an uneven tuberous surface. They consist of soft fabric. At first, their color is white, and then brown.

Differences from Pest Damage

The main difference is that parasites on leaves or stems leave certain traces of their life, for example, mucus, sticky plaque. But the disease, as a rule, manifests itself in the form of spotting on the leaves, rotting stems. In addition, it is enough just to carefully inspect the flower and see if there is any of the pests on it.

Possible consequences

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

• loss of decorativeness;
• lack of flowering;
• growth lag;
• death.

When is resuscitation possible, and when not?

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

Why does a plant affect ailments?

1. Drying out. The main reason for the drying of a Chinese rose in the absence of modern watering. It is also a reaction of the plant to a change of place. The leaves will dry in the frostbitten flower. You just need to give him time to recover and keep warm.
2. Withering. The main reason for the ends of the leaves to fade is a deficiency of phosphorus, nitrogen, and the absence of complementary foods for hibiscus. The general withering of the leaves and the whole flower can be affected by an increased temperature in the room and a decrease in humidity to low levels.
3. Leaf curl. If the Chinese rose began to twist the leaves into a tube, then this is a symptom of pest damage. The most dangerous pests for hibiscus are aphids, whiteflies and spider mites.
4. Falling (about why the buds of Chinese roses fall off and leaves fall and what to do about it, you can find out here). Falling leaves is a reaction to low humidity, the absence of spraying, a sharp change in lighting, drafts and other types of stress for the rose.
5. Yellowing crown. Yellowing of the leaf plate causes several reasons:
   • pests;
   • root disease;
   • leaf chlorosis;
   • poor humidification in the room.
   ATTENTION: If yellowing and falling of leaves are observed at the same time, then the reason for this is waterlogging, stress and low humidity in the room.

About why the Chinese roses turn yellow and fall leaves and buds and what to do to treat it, read in our material.

6. Lack of flowering. There are many reasons that affect the lack of flowering. The most basic remains an excess of nitrogen fertilizing, especially when the plant looks healthy and is richly covered with leaves. The following reasons can also affect the lack of flowering:
   • bad light;
   • lack of moisture;
   • during the winter, the Chinese rose is in a room that is too warm.

Instructions on what to do at home

If the bush dries

If the Chinese rose dries, then the first thing to do is to normalize its watering. From spring to autumn, the flower needs moisture. For irrigation, use settled water at room temperature.

The next cause of the drying of the plant is mites.. To combat them, you can try these drugs:

• Actellik;
• Fitoverm;
• Fufanon;
• Neoron
• Actofit.

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

The processing is as follows:

1. First, carefully water the flower, and treat the stems and leaves with soapy water.
2. Now you can proceed to spraying, and use several drugs in turn.
3. Repeat treatment after 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 infusion bush, wipe the leaves and branches.
• Garlic infusion. 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 wilt

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

1. Remove all dried parts of the plant, slightly affecting its healthy fragments.
2. Treat the rose with antifungal drugs: Fundazole, Topsin, Desavid. You can use a folk remedy - Trichopolum solution (2 tablets per 1 liter of water).
3. For additional stimulation of roses, carry out treatment with such drugs: Epin, Zircon, Domotsvet.

Leaves twist

Twisting of azalea leaves occurs as a result of whitefly activity. To combat it use drugs:

• Actara;
• Admiral
• Biotlin;
• Bankol;
• Spark;
• Appleood
• Fufanon;
• Tanrek.

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

Foliage falling

If the leaves began to fall off, then these parasites are to blame:

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

Turns yellow

To prevent the appearance of yellowness on the leaves or to get rid of it, the following recommendations will be required:

• Watering should be moderate, not allow the presence of stagnant water.
• No draft.
• Timely subcortex.
• Lack of direct sunlight.
• Processing leaves with special means for prevention.

Does not bloom

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

1. To stimulate flowering, it is necessary to trim old branches in a timely manner.
2. Change old soil to new.
3. Set the plant in a sunny place.
4. Do not forget to fertilize to stimulate new shoots and buds. But to reduce the nitrogen-containing compounds.

Watch a video about the reasons for the absence of hibiscus bloom and how to fix it:

Resuscitation measures if dies

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

1. Dilute Zircon - 4 drops per 1 liter of water.
2. Carefully process the bush with a solution and pour a little under the root.
3. Put a transparent bag on the crown. It will help maintain high humidity. But to tie it is not worth it. Take off the bag every day for ventilation.
4. Set the pot in a bright place.

With increased humidity and good lighting, the sleeping kidneys will awaken and the root system will begin to develop. Treatment with Zircon is carried out every day, since it restores turgor.

Prevention

To prevent the development of recurrence of the disease, the following preventive measures should be taken:

• Temperature indicators should not go beyond the norm - 18-22 degrees of heat. Drying and waterlogging are unacceptable.
• Timely treatment of pests. They lead to leaf deformation and the development of diseases. For processing use Peretrum, Actofit.
• Regularly adding nutrient compounds is best to use mineral complex fertilizers.
• The air in the room should be moderately humid, but not dry.

Care

1. Temperature. Chinese rose is a thermophilic plant. In spring and summer, temperature indicators will amount to 25 degrees Celsius, and in winter - 15-20 degrees. If in winter the temperature is below 10 degrees, then the leaves will fall. In the summer, put the flower on the balcony, protecting from rain and wind.
2. Lighting. Hibiscus is a photophilous culture. For him, diffused light is important. If in the summer direct sunlight will fall on the flower, then this is fraught with the development of a burn. Grow a plant on eastern or western windows.
3. Watering. In spring and summer, the Chinese rose needs abundant watering. Use water at a standing temperature and room temperature. Avoid waterlogging. In winter, moderate watering. Before the next irrigation, wait until the soil is completely dry. It is imperative to provide for quality drainage.
4. Air humidity. In the summer, hibiscus needs high humidity. It is useful for him to carry out frequent sprayings. Only water should not fall on the flowers, otherwise they may fall away. In winter, less moisture is required. But if there was central heating, then spraying should be carried out every other day.
5. Top dressing. From spring to autumn, introduce complex nutritional formulations for flowering indoor plants. Do this once every 2 weeks. Starting in August, nitrogen-containing top dressing reduced.
6. Pruning. Strongly prune the Chinese rose every spring. This will allow the bush to acquire a compact form with a large number of buds. If the plant began to stretch very much, then cut it off during the growth period. Thanks to pruning, the flower can take the form of a shrub or tree.

Conclusion

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

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