How to cut osmanthus purple?

Before sprouting in spring, select 1~2-year-old robust Lagerstroemia indica branches and cut them into cuttings of about 15 ~ 20cm. The base of cuttings can be soaked in 2000mg/kg NAA for 5~ 10 seconds (which is helpful for rooting), and then inserted into the culture medium mixed with vegetable garden soil, peat and river sand in equal proportion, and the insertion depth is as follows. After transplanting, cover with a small arch shed, and pay attention to keep the soil moist. 1~2 months later can take root, the survival rate can reach more than 90%, and the plant height of one-year-old seedlings can reach about 50 cm.

Softwood cuttings can also be used in summer and autumn, but attention should be paid to shading and moisturizing, so as to take root faster and have a higher survival rate. In addition, we can also use electronic gap spraying full light to raise seedlings. During the whole growing season, new and old branches can be cut, and the survival rate is over 95%.

Lagerstroemia indica can also be used as a material for propagation and seedling raising. In early spring, select branches that are more than 3 years old, cut into cuttings with a length of 20~30 cm, soak the base with NAA of 3000 mg/kg for 5 ~ 10 seconds, and then insert them into the soil. Cutting method and depth are the same as above. Pay attention to keep the soil moist, so that it can take root and sprout in that year, and then turn over the soil in the next spring to cultivate seedlings. This method is often used to cultivate bonsai materials of Lagerstroemia indica stumps.

It can also be propagated by root cutting. At the end of 1 1, combined with deep tillage, lateral roots were dug around Lagerstroemia indica, with the root diameter of 0.5 cm ~ 1.5 cm and top roots, and then cut into 10 cm root segments and soaked with 100 mg/kg ABT rooting powder.