There are the following reasons why the seeds of Chinese cabbage bought are not picked up:

1, Time Not Up: It is time not up for the leaves to grow without bolting, and the time to grow large flower moss is in early spring (it needs wintering and low temperature vernalization), which is related to the season.

2. Insufficient fertility: Insufficient fertility causes many plants to stop growing, so heavy fertilizer must be applied in sunny days, and farmyard manure for people and livestock and bean cakes should be mixed with water.