Bonsai trees are still growing. If they are allowed to grow naturally without restraint, it will inevitably affect the shape of the tree and lose its artistic value. Therefore, it is necessary to prune in time, cut long branches short, and thin out dense branches. For pine tree species, pick the buds when the buds have just sprouted to control the growth of new branches, so as to maintain the graceful tree posture and appropriate proportions.

(1) Topping: In order to inhibit the high growth of bonsai trees and promote the development of flat side branches, the tender tips of the branches can be removed.

(2) Picking buds: When a bonsai tree grows many adventitious buds at its base or trunk, the buds should be picked at any time to avoid the formation of forked branches and affect the appearance of the tree. In particular, tree species such as elm, plum, winter jasmine, and snow in June are prone to produce adventitious buds, and more attention should be paid to picking buds.

(3) Leaf picking: For bonsai trees with foliage, the viewing period is often the germination period of new leaves, such as maples, pomegranates and other new leaves that are red. By picking leaves, the trees can grow several times a year. New leaves appear for the second time, which are bright and pleasing to the eye, improving their ornamental effect. Bonsai trees such as elm and ginkgo can also enjoy their fresh and tender leaves by picking leaves.

(4) Pruning: Bonsai trees often grow many new branches. In order to maintain their beautiful appearance, regular pruning is required. The pruning method should be determined according to the shape of the tree. If it has a cloud-like shape, prune the branches into a flat shape. Generally, dead branches, parallel branches, crossing branches, etc. that hinder the appearance should be cut off in time.