When the weather is hot and cold, you can't change the soil for orchids. The most suitable time is in spring and autumn, which won't do harm to the plants. If the root system of the plant is accidentally damaged during the soil replacement, the root system can recover and self-healing quickly in spring and autumn, without too much influence on its growth. In addition, in the spring, the soil bacteria will be relatively less, and changing soil for it will reduce the probability of bacterial infection.
When changing soil for orchid, it should be replaced with soil with good air permeability and rich humus, which is more conducive to plant recovery. The most important thing is to disinfect the soil. If you use the newly purchased soil, you can use it at ease. If other plants have been planted before, they must be disinfected.
When changing soil, care should be taken to avoid damage to the root system of the plant as much as possible. If its root system is damaged, it is difficult to recover after being put into the basin. Therefore, in case of root injury, reasonable remedial measures should be taken
