1、 Cause

1. The temperature is too low: it likes to grow in a warm environment. The best temperature is between 15 ℃ and 25 ℃. If it is lower than 15 ℃, it will produce freezing injury and lead to rotten roots if protective measures are not taken in time

2. Watering too much: although it likes a humid environment, if the root system is soaked in water for a long time during maintenance, it will be unable to breathe. Over time, it will cause root rot due to lack of oxygen

3. Infected bacteria: because it likes humid environment, it is easy to infect diseases. Once infected, it will lead to leaf loss and rotten roots

4. Excessive fertilization: if fertilization is too frequent during maintenance, or the applied fertilizer concentration is too large, the heat is too high, the root system will be burned and rot will occur

2、 Remedies

In case of rotten roots during maintenance, no matter what the reason is, the pot shall be removed and the broken roots shall be cut off. After that, soak the roots in disinfectant, soak them for about half an hour, and take them out to dry. Then re plant in the preparation of new basin soil. Provide a warm environment during later maintenance, do not water too much, and ponding is strictly prohibited. Applying fertilizer is a special fertilizer that can be purchased and applied according to the instructions. In addition, the disease should be treated by spraying drugs in time