1、 Causes of occurrence

1. Its maintenance cannot grow in a closed and dark environment for a long time, otherwise it will grow in vain. But it can't be irradiated by too strong light for a long time, which will also cause its leaves to be gray white

2. Although it doesn't need much fertilizer, it can't be applied at all, otherwise malnutrition will cause its leaves to turn white and ugly

3. Too low or too high temperature will cause this phenomenon, especially in winter and summer

4. It is sensitive to smoke and ash. If the leaves are contaminated with a lot of dust, it will also make the leaves white and grow unhealthy

2、 What should I do

1. The ambient temperature of growth is better above zero in winter, and it can be maintained at about 10 degrees. In summer, its growth temperature should be controlled at about 25 ℃ to 28 ℃, so that it will slowly recover after maintenance for a period of time

2. Correctly apply fertilizer to it, and don't apply fertilizer without maturity or fertilizer with too high concentration. The frequency of application is about once every 10 to 15 days, and there is no need to apply fertilizer when it is cold

3. After a period of time, you need to wipe the leaves of the plant with a clean wet rag to remove the dust on it