The root is the source of plant nutrients. If the root is damaged, the power to absorb nutrients becomes weak, and the leaves naturally have no growth momentum. Generally, this kind of rotten root occurs because too much water is distributed and the drainage is not smooth, which will cause damage to the root. It belongs to the fleshy root system, which can stand a little drought, but can't stand water logging, which should also be kept in mind at ordinary times.
Take out the plant and check the rotten root. If the root is slightly rotten, cut off the injured root and leave it healthy. Take care to avoid damaging the whole root system. Replace the soil for planting, and use containers with good drainage and air permeability and soft sandy soil. Usually, water supply should not be too much, frequency and water should be reduced. Once a week in summer, less in winter. It's OK to make up water once every ten and a half days. If you find dust on the leaves, you can spray the water. When the formal water supply to pour through, see the bottom of the basin has a slight water leakage.
The water in the air is insufficient, the leaf can't feel the water completely, it will become soft and even some will break in the middle.
Provide a moist environment for the leaves and keep a certain amount of water. Especially when autumn and winter are dry, pay attention to spray water. The water temperature is about the same as the room temperature. Spray water and wash the leaves every week.
