Look at the specific site conditions, whether the distribution structure of the main branches of the tree is reasonable, and whether the growth potential between the main branches and the crown is balanced to determine the pruning direction.

Secondly, firstly, cut off some large perennial branches and even main branches that affect the growth and development of begonia seedlings, destroy the tree structure, disturb the tree shape and suffer from diseases and insect pests, so that the begonia seedlings can basically achieve the purpose and requirements of shaping and pruning.

Three pruning: on the basis that the structural form of the tree basically meets the requirements of the purpose of use, each main branch is carefully pruned, following the principle of keeping strong but not weak, leaving outside and not leaving inside, and using techniques such as short cutting and thinning to make the shape of the tree more perfect.

Fourth, after the pruning is basically completed, the whole tree body should be carefully reviewed, and the wrong or omitted pruning places should be corrected or supplemented. From the group point of view, the influence between adjacent trees should be checked and adjusted.