Cause: the given light conditions are very important. Too strong direct sunlight will cause the water in the water to be separated and lost, which will cause the leaves to become yellow and dry. In serious cases, they may die in the sun. On the contrary, the long-term lack of sunlight, long-term in the shade environment, leaves will not get sunlight, long-term, the whole leaves will be yellow.
Solution: too strong light causes yellow leaves, which can be moved to a cool place. If you haven't got enough sunshine for a long time, you need to change your position and supplement the sunshine in time, so that you can promote the healthy growth of the plant.
Cause: excessive fertilization or excessive concentration will lead to the accumulation of nutrients, which will not be absorbed. The newly grown leaves will turn yellow brown, and the old leaves will turn scorched yellow and fall off. For a long time, lack of nutrient supply, the plant can not get the support of nutrients, the small leaves will become lighter, the old leaves will also change from green to yellow.
Solution: when excessive fertilization is found, it is necessary to stop the application immediately. If it is serious, the root position can be rinsed with clear water to wash off the remaining nutrients. If the lack of nutrients, you can add a little thin fertilizer, but the concentration can not be too high
