1、 Temperature

The ideal growth temperature of watercress green should be between 18-30 ℃. Too high or too low temperature is not conducive to root germination, so it is best to keep it in a suitable temperature environment

2、 Light

The root growth of watercress green is to avoid light. Many friends like to use transparent hydroponic equipment for viewing and beauty, but it is acceptable for plants that have grown roots, and it is not conducive to root germination for plants without roots. If you want to make the root system grow rapidly in the hydroponic state, you should shade the hydroponic utensils. Branches and leaves like to scatter light, so they should be placed in an environment with bright scattered light

3、 Fertilizer

The requirements of root system for nutrients in water are relatively high. If you want to root faster, the fertilizer in water should be relatively scarce. If there is more fertilizer in the water, it will inhibit the occurrence of new roots. In addition, some rooting agents and auxin can be used to stimulate the occurrence of new roots of Douban green