2. Sowing: After the berries are ripe, harvest, clean and take seeds. You can also buy mature seeds, the seeds should be complete and full, prepare loose and fertile planting land, drill, pour enough water, and adjust the temperature to about 20℃.
3. Plant division: Dig out the underground stem of the plant in spring and autumn, divide it into several parts, each part has 3-4 new buds, and plant them separately.