Ball splitting propagation: the ball splitting will be carried out in August to September. According to the shape of the ball, if there is a ball, it can be divided into plants, which can be directly split by hand and planted in the basin. Sowing and propagation: in spring and autumn, the seeds are sown in the basin, with a spacing of 5-10 cm. It is better to be thin. During the growth period, proper watering and fertilization are required.