Most gardeners plant bright annual flowers on their plots every year . The most beautiful and "fluffy" plant is considered to be petunia, which can be successfully cultivated by creating a flower garden. It also grows beautifully in drawers, on ordinary balconies. However, many are faced with the problem of forcing seedlings. Quite often, the plant is sick, so beginners have a question about why the leaves of petunias turn yellow during normal watering and backlighting.
The versatility of the flower is manifested in everything: it perfectly takes root in flowerbeds and flowerpots, blooms for a very long time and has a delicate, pleasant aroma. By the way, there is practically no allergy to this plant. And autumn potted petunia compositions are a great alternative to artificial counterparts. To get a thick bush you need to take care of the quality of seedlings and prepare the necessary fertilizers. Good and easy-to-care varieties are considered to be "Typhoon" and bright "Fortunia". Before germination of the first shoots, it is necessary to obtain information on why the leaves of the petunias turn yellow and what needs to be done to correct this defect.
Forcing flowers at home
You can buy ready-made seedlings, but it is quite expensive, so it is better to grow bushes of petunias from purchased seeds. To get early flowering, the seeds are sown in mid-February. As a container for seedlings, any suitable containers with sufficiently large drainage holes are used. Seeds are sown directly on prepared soil, which should already be moistened. For improved contact with the ground, the seed is pressed lightly on top, but not sprinkled. At first, after emergence, it is better not to fertilize the soil. You can water them or spray with a weak solution of manganese. If the leaves of the petunia turn yellow, then more often this happens with seedlings. An adult plant is rarely susceptible to such a disease. When germinating seeds, the air temperature must be maintained from + 24 ° C to + 26 ° C. From above, the containers are covered with natural breathable material to preserve moisture, and they should stand on a warm and bright windowsill. Using fabric instead of the usual glass or film allows you to grow strong seedlings with strong stems. Finding out why the leaves of petunias turn yellow , flower growers came to the conclusion that in most cases this occurs due to an imbalance in the mineral nutrition of plants.
Lack of trace elements in flowering plants
After the first shoots appear, the sprouts can change their color or bend to the ground. To understand why petunia leaves turn yellow, you need to conduct a small visual diagnosis. If the plant lacks nitrogen fertilizers, then its stems and bud of the future flower will not be bright, but pale green in color. In addition, yellow or brown spots may appear on them . Plant growth almost stops, and the side roots begin to die.
If there is not enough phosphorus, the leaves will be dark: purple, blue-green or even purple. With a similar lack of minerals, flowering may begin later or not at all. The edges of the leaves will turn brown or orange.
A lack of potassium causes a disease such as chlorosis in a plant. Answering the question of why the leaves of petunias turn yellow, experienced gardeners call this disease the main reason. If you do not add potassium in time and start chlorosis, then the plant will surely die. The procedure for applying this mineral fertilizer should be carried out regularly, because it is too quickly washed out of heavy peat-based soils.