Rhododendron is a plant that leaves easily. Generally, it can be divided into two situations. One is root rot, which causes leaves to fall off. This situation is beyond treatment, so simply replant it. Another situation is that plants suddenly change their growing environment, such as sudden high temperature, dry air, or slight freezing injury, and defoliation can also occur. Because of this, it can be saved. As long as the plants are maintained in a place with astigmatism, during this period, neither water nor fertilizer is used, and water is sprayed with water mist every morning to keep the branches of rhododendrons moist. When new leaves germinate, topdressing can be carried out to promote the robust growth of leaves. Pay attention to cultivation management at ordinary times. Rhododendron is afraid of drought and waterlogging. Rhododendron flowerpot has too much soil, and the root tip will shrink. First, the leaves will droop or curl, and then the tips of the young leaves will turn brown. If it is serious, it will not recover for a long time and will die day by day. The soil in the basin is over-moist, and the ventilation is small and good, which leads to rotten roots. Light leaves turn yellow, leaves fall early, growth stops, and severe ones die.