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If you have to paint a balcony / loggia or a personal plot, then we suggest you do this with the help of a petunia. A variety of varieties and colors allows you to create a colorful picture on the site and balcony. The leaves of this flower are double and smooth, and the stems can be creeping, straight or falling.
Like other plants, it happens that petunias sometimes get sick. The first signs of a flower disease are yellowing and dryness of the leaves. Such a reaction may be the result of improper care, for example, due to a lack or excess of moisture or a lack of trace elements. This article will discuss why the petunia turns yellow and how to correct or prevent this phenomenon.
The first reason is a violation of the rules of irrigation
Excess moisture leads to the appearance of root rot on the plant. As a result, the stem becomes soft, and the petunia leaves turn yellow. If the necessary measures are not taken, then the rot will spread to the roots, as a result of which the plant will die. Excess moisture leads to the development of fungal diseases.
To cure a plant, you need to perform the following three points:
- Remove the affected shoots, and treat the incision sites with fungicides.
- Avoid standing water.
- Loosen the soil.
Petunias tolerate drought more easily than overflow. A wilted plant after watering quickly acquires a healthy appearance. However, with a chronic lack of moisture, petunias weaken, as they lose their immunity. As a result, pests settle on the leaves, diseases develop.
Powdery mildew and spider mites
Most often, petunia leaves turn yellow due to powdery mildew. This is a type of fungal infection. The reason for the development of the disease is a sharp change in the level of temperature and humidity in the process of growing a plant.
A sign of powdery mildew is a whitish coating on the leaves. It is worth noting that the fight against the disease requires effort. If petunia is grown at home, then the affected bushes should be transplanted into pre-steamed soil. The next condition is strict adherence to humidity and temperature conditions.
Excess nitrogen is also inappropriate in the soil in which petunias are grown. Be that as it may, yellow leaves always have a reason. In addition to powdery mildew, a flower can infect a spider mite. This pest is the most dangerous for cultivated plants.
The spider mite very quickly envelops not only the leaves of the plant, but also the stem with a cobweb, which cuts off access to nutrients. The reason for the appearance of a tick is occasionally excessive dryness, most often high humidity.
If the petunia has stopped blooming, the leaves have turned yellow, and a cobweb has formed on the crown, then conduct a complete inspection of the plant. You can destroy the spider mite with special means. In addition, you can involve folk remedies in pest control. For example, you can prepare soapy water and spray it on a bush, or make a tobacco tincture for later spraying. Petunias planted outdoors are more susceptible to spider mite damage, so as a preventive measure, they can be pollinated with crushed sulfur.
Chlorous yellowing
There are several provocateurs of chlorosis. Among them:
- Use of hard water.
- Violation of the temperature regime.
- Lack of iron.
hard water
Watering is carried out after the top layer of soil dries out. So that the moisture in the ground does not stagnate, the soil must always remain loose. Settled, soft water is best suited for irrigation.
Violation of the temperature regime
If the temperature regime is violated when growing a petunia, then the leaves on it will first acquire a purple color, after which they will turn yellow. To minimize this problem, you need to spray the bush with ammonia dissolved in water (1 ml of alcohol goes to half a bucket) or ammonium fertilizer.
Lack of iron
Petunias are usually deficient in iron if they are grown in alkaline soil or in pots. To avoid chlorosis, plant petunias in acidic soil. Or after planting regularly acidify the soil.
Features of petunia care
If you want the bushes you grow to be less sick, then water them once a day. The best time to water is in the late afternoon. In hot weather, it is better to water the plant at dusk to avoid the appearance of spider mites. If small dots appear on the leaves, then this is a sure sign of excess moisture in the soil. In this case, it is better to stop watering the plant for a few days. The soil needs to be loosened, so that the roots will receive more oxygen.
If a crust has formed on the top layer of soil, then it’s time to resume watering the plant. At the same time, you need to feed him no more than 2 times a week. To activate the process of formation of new buds, wilted flowers must be removed in a timely manner. If you notice that the root of the plant is rotten, then you should treat it with a fungicide as soon as possible. In this case, the affected part of the stem must be removed.
This is due to the fact that the drops tear the petals apart, because of which the bush acquires a sloppy appearance. It may even stop blooming. If rain is expected, then the petunias must be brought into the shelter in advance.
Generally speaking, petunia takes root perfectly, so it is quite profitable to grow it at home. This beautiful flowering plant can brighten up your yard if you plant it along a fence. Near the petunia, the young take root well. Only here for the cultivation of this plant you need to pour gravel into the ground. Also young loves space.
So, petunia is an unpretentious, beautifully flowering plant that can be grown at home. The main thing, at the same time, is to properly care for him. The key to success is timely watering and a stable temperature regime in the process of growth and development.
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