Soak the seeds in warm water at 55℃10 ~15 hours before sowing. Level the land, apply sole fertilizer, water it in advance 1 day, and it is advisable to keep it crowded. After sowing, cover it with fine sand, keep it moist, and shade it properly. It can germinate in about two weeks, and it can be transplanted when it grows to 3-4 real leaves. Seedlings generally don't bloom in the same year, and only bloom in the second year. The germination rate of seed reproduction is high.

2, ramet propagation

The ramet propagation can be carried out in spring and autumn. The dead roots are removed, the stems and buds on the mother plant are cut off with roots, cultivated in fertile and well-drained soil, properly shaded, and can survive in 5 ~10 days, and bloom in the same year.

3. Cutting propagation

During the growth period, select healthy plants, take semi-lignified branches 10cm, keep 2 ~ 3 leaves, cut the upper opening horizontally, and cut the lower end into 45. Dip the inclined plane with rooting powder 1000 times solution for 3-5 seconds, insert it into moist sandy loam, and shade the seedbed properly, and it will take about15-20 days to take root. 1 month can be transplanted.