The reason for the yellowing of evergreen leaves, 11 factors lead to leaf yellow.

Causes of yellowing of evergreen leaves 1. Normal aging normal leaf yellow

Evergreen natural metabolism, evergreen leaves will be yellow dry shedding, with the growth of evergreen plants, the bottom leaves begin to aging and yellowing.

2. Too much watering leads to yellow leaves.

Evergreen is the fleshy root system, most afraid of stagnant water, therefore, can not be watered, otherwise it is easy to cause rotten roots, resulting in evergreen leaves yellowing.

3. Too little watering leads to yellow leaves.

Forget to water the evergreen, resulting in the basin soil is too dry, the root system, branches and stems lack of water, causing the leaves to turn yellow.

4. Excessive sunlight leads to yellow leaves.

Evergreen happy semi-overcast environment, avoid summer strong light direct light, strong light direct light easy to cause evergreen leaves scorched edge or even withered yellow, the light is too strong easy to burn.

5. Lack of light leads to yellow leaves.

Lack of light in the permanent period of ten thousand years, the chlorophyll in the leaves decreased, so that the green of the leaves gradually disappeared, showing albinism, and the leaves turned yellow and white.

6. Leaf yellow is caused by poor ventilation.

It is more common to put evergreen in a poorly ventilated environment for a long time, especially in hot summer, poor ventilation and improper shade. In addition, evergreen leaves grow luxuriantly and have not been built for a long time, and their internal branches and leaves are unable to receive light. It's easy to cause the leaves inside to turn yellow.

7. Too low temperature leads to leaf yellow.

The suitable growth temperature is 15 ℃ and 18 ℃, and the lowest temperature should not be lower than 5 ℃, otherwise it is easy to freeze and cause leaves to yellowing.

8. Excessive fertilization leads to yellow leaves.

Excessive fertilization is another common cause of yellowing of evergreen leaves, mainly caused by fertilizer damage, damage to the root system of evergreen and so on.

9. The leaves are too dirty to cause the leaves to be yellow

Evergreen usually should pay attention to keep the leaves clean and tidy, if the accumulation of too much dust on the leaves affects photosynthesis, it will also cause evergreen leaves to turn yellow.

10. Diseases and insect pests cause leaf yellowing

Brown soft scale pests can also cause evergreen leaves to yellow. when brown soft scale harms evergreen leaves, they generally cluster on the leaves or tender leaves, sucking plant sap and excreting mucus at the same time. Its excretion is easy to cause a large number of coal fouling bacteria to multiply, blackening stems and leaves, affecting plant photosynthesis, resulting in weak growth potential, leaves yellowing, hindering viewing.

12. Alkalinity of soil and water

Avoid hard clay and alkaline soil when growing evergreen or potted. Generally speaking, the evergreen planted in the north is prone to the cause of leaf yellowing caused by alkaline soil and water.

The reason for the yellowing of evergreen leaves

Raising evergreen at home will encounter the situation of yellowing leaves, don't worry at this time, first make clear what the reason is, and then prescribe the right medicine to solve the yellowing problem of evergreen leaves!

Yellowing of leaves caused by long-term loss of fat

Evergreen has not applied nitrogen fertilizer or changed water for a long time, and there is a lack of nitrogen and other nutrient elements in the water, resulting in thin and yellow branches and leaves. If the hydroponic evergreen needs to be changed into new culture water in time, the rarefied mature liquid fertilizer or compound flower fertilizer should be applied gradually.

Yellowing of leaves caused by excessive fertilization

If you fertilize too much, the new leaves of evergreen will be thickened, and the old leaves will be rugged, and the dry tips of the old leaves will fall off. You should immediately stop fertilization, increase the amount of water exchange, make the fertilizer lose, or immediately pour the pot, rinse the bulb root with water and then replant it into the basin.

Yellowing of leaves caused by heat

If the flowers are placed in a high temperature place to let the strong light shine directly, it is very easy to cause the young leaf tip and leaf edge to scorch, or the leaf yellow to fall off. Move to a well-ventilated shady place in time.

Yellowing of leaves caused by excessive shading

If the flowers are kept in shade or in a place with insufficient light for a long time, it will cause the branches and leaves to turn yellow.

Yellowing of leaves caused by alkali in soil and water

Due to the lack of soluble iron and other elements that can be absorbed by the water, the leaves of evergreen will gradually turn yellow. Acid soil and water should be selected when planting, and alum and fertilizer water should be often irrigated during the growth period.

Yellowing of leaves caused by poor ventilation

If the application of too much nitrogen fertilizer, the evergreen branches and leaves grow too luxuriantly, coupled with long-term unpruned, resulting in insufficient light of the inner chamber branches and leaves, which is easy to cause the leaves to yellowing and falling off. Reasonable fertilization should be applied and pruning should be strengthened to make it ventilated and transparent.

Yellowing of leaves caused by dry air

When the indoor air is too dry, flowers often appear leaf tip dryness or leaf edge scorching and other phenomena. Attention should be paid to water spraying, plastic film cover and other methods to increase air humidity to prevent the occurrence of leaf yellowing.

Yellowing of leaves caused by improper temperature

When the room temperature is too low in winter, the flowers suffer from cold damage, which leads to the yellowing of the leaves and death in severe cases. If the room temperature is too high, the transpiration of the plant is too high, and the root water and nutrients are in short supply, the leaves will turn yellow. Please pay attention to adjust the room temperature in time.

Yellowing of leaves caused by diseases and insect pests

Leaf spot disease caused by fungi and other bacteria is easy to cause local necrosis of leaves, yellow spots or patches, serious withering and falling off of the whole leaf, yellow-green mottle on the leaves infected by mosaic virus, and harm to shell insects, red spiders and so on.

Yellowing of leaves caused by strong sexual stimulation

The use of excessive concentration of pesticides in the prevention and control of diseases and insect pests, or being polluted by toxic gases in the atmosphere, or suddenly watering cold water when the temperature is high, are easy to cause local yellowing and scorching of the leaf tip or leaf surface, or even the whole plant to die. Therefore, we should pay attention to the rational use of pesticides and try to eliminate air pollution sources. Avoid watering flowers with cold water around noon in midsummer.

The yellowing of evergreen leaves is sometimes caused by one reason, but most of the time it is caused by many factors. Therefore, a correct diagnosis should be made in order to prescribe the right medicine to the case.

What is the cause of the yellowing of evergreen leaves? find out the reason and prescribe the right medicine.

Raising evergreen at home will encounter the situation of yellowing leaves, don't worry at this time, first make clear what the reason is, and then prescribe the right medicine to solve the yellowing problem of evergreen leaves! Next, let's talk to you about the reason why the evergreen leaves turn yellow.

What is the reason for the yellowing of evergreen leaves?

Yellowing of leaves caused by long-term loss of fat

Evergreen has not applied nitrogen fertilizer or changed water for a long time, and there is a lack of nitrogen and other nutrient elements in the water, resulting in thin and yellow branches and leaves. If the hydroponic evergreen needs to be changed into new culture water in time, the rarefied mature liquid fertilizer or compound flower fertilizer should be applied gradually.

Yellowing of leaves caused by excessive fertilization

If you fertilize too much, the new leaves of evergreen will be thickened, and the old leaves will be rugged, and the dry tips of the old leaves will fall off. You should immediately stop fertilization, increase the amount of water exchange, make the fertilizer lose, or immediately pour the pot, rinse the bulb root with water and then replant it into the basin.

Yellowing of leaves caused by heat

If the flowers are placed in a high temperature place to let the strong light shine directly, it is very easy to cause the young leaf tip and leaf edge to scorch, or the leaf yellow to fall off. Move to a well-ventilated shady place in time.

Yellowing of leaves caused by excessive shading

If the flowers are kept in shade or in a place with insufficient light for a long time, it will cause the branches and leaves to turn yellow.

Yellowing of leaves caused by alkali in soil and water

Due to the lack of soluble iron and other elements that can be absorbed by the water, the leaves of evergreen will gradually turn yellow. Acid soil and water should be selected when planting, and alum and fertilizer water should be often irrigated during the growth period.

What is the reason for the yellowing of evergreen leaves?

Yellowing of leaves caused by poor ventilation

If the application of too much nitrogen fertilizer, the evergreen branches and leaves grow too luxuriantly, coupled with long-term unpruned, resulting in insufficient light of the inner chamber branches and leaves, which is easy to cause the leaves to yellowing and falling off. Reasonable fertilization should be applied and pruning should be strengthened to make it ventilated and transparent.

Yellowing of leaves caused by dry air

When the indoor air is too dry, flowers often appear leaf tip dryness or leaf edge scorching and other phenomena. Attention should be paid to water spraying, plastic film cover and other methods to increase air humidity to prevent the occurrence of leaf yellowing.

Yellowing of leaves caused by improper temperature

When the room temperature is too low in winter, the flowers suffer from cold damage, which leads to the yellowing of the leaves and death in severe cases. If the room temperature is too high, the transpiration of the plant is too high, and the root water and nutrients are in short supply, the leaves will turn yellow. Please pay attention to adjust the room temperature in time.

Yellowing of leaves caused by diseases and insect pests

Leaf spot disease caused by fungi and other bacteria is easy to cause local necrosis of leaves, yellow spots or patches, serious withering and falling off of the whole leaf, yellow-green mottle on the leaves infected by mosaic virus, and harm to shell insects, red spiders and so on.

Yellowing of leaves caused by strong sexual stimulation

The use of excessive concentration of pesticides in the prevention and control of diseases and insect pests, or being polluted by toxic gases in the atmosphere, or suddenly watering cold water when the temperature is high, are easy to cause local yellowing and scorching of the leaf tip or leaf surface, or even the whole plant to die. Therefore, we should pay attention to the rational use of pesticides and try to eliminate air pollution sources. Avoid watering flowers with cold water around noon in midsummer.

The yellowing of evergreen leaves is sometimes caused by one reason, but most of the time it is caused by many factors. Therefore, a correct diagnosis should be made in order to prescribe the right medicine to the case.