1、 Why

1. It may be that too much water is given during daily water supply, so that a large amount of water will accumulate at the bottom of the basin, and the root system will be damaged after a long time

2. It may also be due to uneven or excessive fertilization as a whole, resulting in part or the whole of the root system being burned by high concentration of fertilizer, so that the leaves will fall off

3. In addition, the reason may be that it was placed outdoors in summer, and the leaf tissue was burned by strong light, thus losing its vitality

2、 How to treat

1. If you give too much water, you can put the plant in well ventilated sunlight to evaporate water, or if the situation is very serious, you need to change the pot for treatment. If the root rot is serious during the period, you need to prune the root

2. In the case of too much fertilizer, it is necessary to add water to dilute, and then maintain good ventilation and light

3. If you are sunburned, you need to temporarily avoid light, ensure good ventilation, and timely restore water supply for a period of time