Douban Green likes sandy loam which is loose and fertile, rich in humus and has good drainage. In the maintenance process, we try to avoid the use of clay heavy soil, otherwise it will affect the growth of plants or cause rotten roots.
In the process of daily maintenance, we can use sapropel or peat, clay, river sand or perlite to mix and prepare in the proportion of 4:3:2. After mixing evenly, disinfect the soil to keep about 40% water content. In this way, it can be maintained and cultivated normally. In order to maintain the soil fertility, the decomposed organic fertilizer can be added to the soil as the base fertilizer. Only when suitable soil is used, can it grow normally