What is the pruning method of American red fireball Lagerstroemia indica?

1. Pruning season of Lagerstroemia indica: light pruning can be carried out all year round, and heavy pruning should be carried out before germination in early spring.

2. After Lagerstroemia speciosa is planted, when Lagerstroemia speciosa grows to a certain height, coring is taken to promote secondary branching, and then 3-5 robust branches can be left as main branches, and 1-2 branches with different angles and balanced growth can be left as side branches. When pruning every year, the upper branches with larger angles should be selected as extension branches and pruned appropriately. This kind of tree has good permeability and can be viewed three-dimensionally. In addition, diseased branches, insect branches, weak branches, overlapping branches, creeping branches and cross branches can all be cut off, which makes the crown of Lagerstroemia speciosa more perfect and beautiful.