After bergamot enters winter, keep an old vine on the plant, cut off the remaining branches and vines, and cover them with straw and film to promote overwintering. In the second spring, when the temperature rises, you can see the old vines sprouting, promote contact with the sun, give water and fertilizer reasonably, and make the bergamot grow and develop. To use bergamot in winter, in addition to the old vine, we should also choose the first old melon to keep seeds.