1, hollow lettuce in central and southern China distribution more, like a warm and humid environment, do not tolerate cold, nor heat, in the Yangtze River Basin provinces from April to October can grow, suitable for growing temperature between 25-30 degrees, the southern region can be planted in April-July, the northern time a little later, in the June-August, the seeds should be germinated ahead of time, dewy white when planted into the The seeds should be germinated in advance and planted in the soil when they are white.

2, the hollow cabbage native to China, is a more widely planted vegetables, sometimes wild state, central and southern China planted in a larger area, distribution throughout tropical Asia, Africa and Oceania.

3, the hollow cabbage in China's southern distribution of more, like warm and humid environment, intolerant of cold, also intolerant of heat, in the Yangtze River Basin provinces from April to October can grow.

4, for the spread of the growth of cabbage, the temperature should be maintained between 25 degrees to 30 degrees, such an environment for the growth, the spreading leaves grow vigorously.