Plant green and red cabbage and salad bitters such as radicchio, sorrel, arugala, watercress in the next layer out from the sweet potatoes.

• 种植绿卷心菜(甘蓝)、红球甘蓝以及一些做沙拉的苦味菜，例如菊苣、酸模(尤指水乔菜)、芝麻菜和豆瓣菜。