1. Spring pruning: In the spring around April, the Toona sinensis tree needs pruning once, usually together with the collection of Toona sinensis buds. The top bud of a tree that has been maintained for more than two years needs to be removed so that it can sprout 2-3 new buds quickly.

2. Summer pruning: Summer pruning is generally carried out in July and August, which is more conducive to the wound healing of Toona sinensis trees. It should be avoided when the weather is bad. When pruning, it is necessary to cut some branches that grow vigorously and grow too long and too high.

3. Winter pruning: Winter pruning is generally carried out in late autumn, early winter or early spring, preferably at the end of 10. To cut off the annual dense branches, weak branches, diseased branches, dead branches and perennial old branches. The scissors used should be sharp, disinfected in advance, and the cut should be smooth.