How high should the branches of Wei Zishu stay?

① Multi-stem (branch) twisting can be used to thicken the trunk of Ziwei bonsai. The sprouting branches in the rhizosphere of Lagerstroemia indica are spirally wound along the trunk one by one and fixed with a string to prevent loosening. After 2 ~ 3 years, the branches and trunk can heal together and become a whole, which makes the trunk obviously thicker and looks antique; Lagerstroemia indica seedlings of different colors can also be planted together in a hole, the base is tied together with brown silk, the trunk is intertwined, twisted together and fixed with string. After 3 ~ 4 years, the trunk is vigorous, simple and thick, with rich colors and unique features.

(2) Pruning and shaping of Lagerstroemia indica L. generally, the intensity pruning is carried out once in winter. When pruning, the branches are evenly distributed and the crown is complete, and the branches that are too prosperous and inappropriate parts are cut off. The branches that are too prosperous are cut short by 2/3, and the branches are generally kept about 6cm in the last winter pruning; In spring, when the new branches grow to about 15cm, the core is removed and the lower part remains about 10cm to promote the growth of the top branched branches. When the forked branches grow to about 20cm, the core is removed again, and the lower part is about 15cm, so as to promote the germination of new branches, and all other branches that affect the appreciation and modeling are removed. After the pruned branches grow out of order, the weaker flower branches and buds irrelevant to the shape are cut off. After the flowers bloom, cut off the residual flowers. If trimmed properly, these flowers can bloom around the National Day.