1、 The water was not thoroughly watered

1. Reason: when watering orchids, it is most taboo to pour half of the water and not completely pour the plant materials. This will cause the upper part of the plant material to be wet and the lower part to be dry. In this way, the root system under the plant material will be dehydrated because it cannot absorb water normally, resulting in the problem of empty root

2. Solution: at this time, the watering method should be improved to ensure that the plant material is completely wet every time. Specifically, every time you water, you should see water flowing out of the drainage hole at the bottom of the flowerpot, and then stop watering

2、 Hardening of plant materials

1. Reason: if the quality of the plant material for curing orchids is poor, or it is used too long, the internal hardening may occur. The air permeability of hardened plant material will be greatly reduced, and the root system of the plant will not breathe freely, resulting in the problem of rotten root

2. Treatment: at this time, replace the plant with more breathable plant material. When changing soil, it is best to add large, medium and small particles of plant material into the flower pot in turn. In this way, the plant material at the bottom can maintain the maximum air permeability, so as to avoid the problem of empty roots again

3、 The plant material is not moisturizing enough

1. Reason: if the plant material for curing orchids has poor moisturizing ability, it will soon become dry after each watering, which will lead to the plant being in a dry environment for a long time and unable to absorb water normally. In this way, it will also have the problem of empty root

2. Treatment method: at this time, it is also necessary to replace the plant material for the plant. The new plant material should be prepared according to the variety of orchids to ensure that it has sufficient air permeability and moisture retention ability to meet the growth needs of plants