The baby cabbage is a pocket-sized small plant cabbage, belonging to the cruciferous Brassica napus cabbage subspecies, for the semi-hardy vegetables. The general fertility period of 45 ~ 65d, commercial ball height 20cm, diameter 8 ~ 9cm, net vegetable weight 150 ~ 300g. Growth of suitable temperature 5 ~ 25 ℃, lower than 5 ℃ is susceptible to frost, so that the ball loose or can not hold the ball; higher than 25 ℃ is easy to dye virus disease. Its outer leaf green, leaf ball embracing