The leaves of the white hosta are yellow, and the leaves of the hosta flowers are yellow

Hosta white-flowered hosta is a negative plant, not tolerant to strong direct light, so too strong light will cause the edge of the leaf to wither.

Water-loving, drought-tolerant, long-term water supply is insufficient, and it is easy to wither yellow.

It prefers an environment with high humidity, and it is easy to wither yellow in a dry environment or when blown by dry hot wind.

Hosta leaves yellowing can be cut off first, follow the principle of small water watering, do a good job of shading, let the plant receive scattered light, to reduce the frequency and amount of fertilization in the later stage, so that its leaves can return to normal growth.

Hosta soil is not suitable: the soil core mountain soil of hosta has certain requirements for the soil, if the soil is not breathable, poor permeability, it will cause its leaves to turn yellow, you can replace the old soil, prepare a pot of loose soil, have a certain permeability and relatively fertile pastoral soil, so that it can grow normally.

Improper watering of hosta flowers: In the maintenance process of Sunzhou hosta flowers, due to overwatering, the roots will rot, affecting the normal growth of the plant, too little watering will make the leaves yellow due to lack of water, so to correct the watering method, according to the principle of small water watering, the leaves of hosta will turn from yellow to green.

Hosta flower is too bright: hosta flower is a plant that prefers shade environment, too strong sunlight will make its leaves yellow, hosta should be maintained in a place that can be exposed to astigmatism, summer shade is more than 80%, only a weak light can meet its needs.

Hosta flower improper fertilization: hosta flower in addition to the requirements for sunlight is more strict, if excessive fertilizer, its roots will be burned after its leaves yellow, at this time first to stop fertilizing it for a period of time, to reduce the frequency and amount of fertilization in the later stage, in order to make its leaves grow normally.

Deficiency of yellowing virus, insect fertilizer is possible.

1. Replace the soil.

When cultivating hosta flowers, if the soil becomes hard and hard, it will cause the plant roots to breathe poorly, causing the leaves of hosta flowers to turn yellow and dry. It is necessary to change the soil of the hosta flower to provide it with a looser, more fertile and more nutritious soil. Humus containing nutrients also needs to be cut off with scissors to cut off the rotten roots of hosta flowers.

2. Shade in time.

Hosta flowers love sunlight but are not resistant to sun exposure. When cultivating hosta flowers in the air, too much sunlight will cause sunburn on the plants, and the leaves of the hosta flowers will be burned. Hosta flowers should be shaded well. Move the flowers to a ventilated and cool room for maintenance, and wash the leaves of the hosta flowers with clean water.

3. Provide nutrients.

Hosta flowers need sufficient nutrients during their growth. When cultivating hosta flowers, if too little fertilizer is applied, it will lead to poor plant growth, making the leaves of hosta flowers yellow and dry. It needs to be fertilized every other month.

Compound fertilizers rich in nitrogen, phosphorus and potassium can be used for fertilization, and well-rotted organic fertilizers can also be used.

4. Maintenance method.

When maintaining hosta flowers, it is necessary to control the ambient temperature between 20 degrees and 25 degrees Celsius in order to make the hosta flowers grow healthily. It is also necessary to provide adequate moisture for hosta flowers. Watering can be done according to the dryness and wetness of the soil, and fungicides need to be sprayed regularly, which can control pests and diseases, and make hosta flowers grow more vigorously.

Reasons why hosta flower leaves turn yellow:

1. Water yellow: the potting soil is wet for a long time, resulting in soil hypoxia, which makes some roots rot, water absorption and fertilizer absorption ability weakened. It is manifested in the young leaves are dark yellow and dull, the apical center of the new shoots is atrophied, and the branches and stems are small and yellow-green.

In this case, the soil should be loosened, watering should be controlled, fertilizer should be stopped, and the heavy ones can be depotted, and the soil balls should be dried in the shade and then potted.

2. Fat yellow: due to excessive fertilization or excessive concentration, especially the yellow leaves caused by partial nitrogen fertilizer, the new leaves are thick and shiny, but the leaf surface is uneven and unstretched, and the old leaves gradually turn yellow and fall off. At this time, the fertilization should be stopped and the amount of watering should be increased appropriately to dilute the nutrients, the potted flower fertilizer water is insufficient or the pot is small, the root system in the pot is senescent or too dense, and the leaves of the flower plant will become thinner and yellow, at this time the pot should be changed and the soil should be changed, usually when the rain arrives at the beginning of summer.

3. Alkali yellow: potted acid-loving flowers, such as camellia, Milan, smiling, rhododendron, jasmine, etc., often cause green loss and yellowing due to soil alkaline reaction. It is manifested in the veins that start from the new leaves of the branches, and the leaf veins, especially the main veins, remain green, and the yellow-green phenomenon is very obvious.

With the aggravation of the degree of yellowing, the leaf veins gradually lose green, and then the whole leaf is white, the leaf edge is scorched, the leaf is littered, and the branches are withered in severe cases, so that the whole plant dies.

4. Yin yellow: Flowers that like sunlight often cause the branches and leaves to wither due to insufficient indoor light, so the pot should be moved to the outdoor ventilation and lighting. For semi-negative flowers, such as bamboo, the leaves will also turn yellow under strong light, so to avoid exposure to high temperature and strong light in summer, they should be moved indoors or set up in a shade shed for storage.

5. Dry yellow: due to long-term lack of watering, or less watering, the leaves are yellowing or brown ends, brown edges, and the old leaves are yellowed and fall off from the bottom up. However, the new leaves generally grow normally, and when this phenomenon occurs, water should be replenished so that the soil is no longer short of water.

6. Burning yellow: like shade and dampness potted flowers, such as spider plant, evergreen, hosta, etc., such as strong direct sunlight, the leaves also have brown ends, brown edges, this phenomenon occurs, the pot can be placed in the shade.

7. Damp heat yellow: some potted flowers that are not resistant to high temperature and high humidity have yellow leaves caused by poor ventilation and improper shading in midsummer, such as hanging bell begonias in summer. Therefore, high temperature and high humidity are also easy to cause leaves to turn yellow, this kind of leaf yellowing can be prevented as long as attention is paid to ventilation and cooling, and the potting soil can not be too wet.