What to do if the leaves of the sunflower are yellow, what to do if the leaves of the sunflower are

Loose-tailed sunflower, the soil needs to be well-drained, loose, and contain a lot of humus; The temperature should be between 20 and 35 degrees, and above 10 degrees in winter; It is best to have scattered light irradiation, and it should be shaded by 50% in summer; Watering according to the weather, hot watering more rainy and less watering; Fertilizer and water once every two weeks during the growth period.

<> which of these causes it?

What to do if the leaves wilt and turn yellow? The first thing to do is to determine if it is caused by too much fertilization or too much drought, and if so, you can water it properly.

Add some powdered organic fertilizer, water, and apply some foliar fertilizer to see the effect.

1. The soil is unsuitable

Acidic soil should be selected for indoor potted sunflower, because the soil acidity is not enough, which will affect the absorption function of the root system of sunflower and cause the leaves to turn yellow.

If the potted soil is too sticky, it will cause some of the root system to rot at the tip, and then the leaves will begin to turn yellow, and the plant will not grow well or even die.

2. Improper transplantation

Transplanting and potting is an important step in growing sunflower at home, and improper handling can lead to yellowing of the leaves. When potting, it is necessary to remove part of the external root system, but the peripheral root system is the main root system for root respiration, if it is damaged by improper operation, the plant will not be able to supply nutrients, and the plant will gradually die of emaciation. The sign of death is that the leaves are yellow and drooping.

3. Overwatering

Sunflower is taller and relies on the roots to transport nutrients for the leaves. Proper watering, the roots can be quickly absorbed, keep the leaves green, but if the potting soil is too wet, it will affect the respiration of the roots, affect the water absorption of the roots, and directly cause the leaves to turn yellow.

4. The sunlight is too strong

The growth of sunflower needs sufficient sunlight, but it needs proper shade in May and September, during which too much light can easily cause plant leaf burns, which is often referred to as sunburn, and the leaves appear yellow spots and become yellow and yellow. As it grows over time, the whole plant wilts. Therefore, in summer, the plants should be maintained under a shade shed or a large tree to avoid direct sunlight.

5. Insect infestation

Leaf mites, scale insects and so on are more common insect pests of sunflower, when the leaves of sunflower grow leaf mites or scale insects, the insect pests cause damage to the plant, and the sunflower seeds will begin to turn yellow, if not sprayed and other measures, sunflower will slowly die.

Generally, there is too much water, rotten roots, do not bother to dig out the roots for ventilation, or stop the water and move to a ventilated place, otherwise it will die.