How does Lagerstroemia indica propagate by cutting?

Cutting propagation of Lagerstroemia indica: Before germination in spring, combined with pruning, select 1 ~ 2-year-old robust branches as cuttings, cut them into 15 ~ 20 cm long, insert them into sandy loam seedbed, keep moisture, and root for 20 days, and the survival rate can reach over 90%. Pay attention to pruning sprouting tillers and cultivate single-stem seedlings. Strengthen water and fertilizer management. In that year, the seedling height can reach about 1 meter. Or cut in plastic arch shed in late autumn, pay attention to moisture, and the survival rate is high in the next spring. You can also use twigs with leaves during the growing period, and it will be faster to take root if you use automatic spray cutting. In Huxian Central Nursery, Shaanxi Province, the survival rate was significantly improved by sealing the upper part of cuttings before spring and cutting after routine management.