Pruning is an important technical measure for high-yield cultivation of Ginkgo biloba. Its basic principles are: due to tree shape, light pruning and slow release, winter pruning is the main method, winter and summer should be combined, and less thinning should not be cut.

Pruning time of ginkgo tree

Small broken branches of ginkgo trees can be pruned, but big branches should not be pruned. It can be trimmed all year round. Generally, a tree is most suitable for pruning and breeding when it leaves in autumn, and it can germinate in spring, but it is not as good as after autumn. Ginkgo trees are usually pruned in summer and winter. In winter, plants are dormant, grow slowly and need pruning. This can concentrate the stored nutrients, which is conducive to the growth of new buds in the next year and make them flourish.

Pruning method of ginkgo tree

1. Short cutting is a very common pruning method, mainly for annual branches. It can be shortened to promote the growth of branches and side branches. Usually the pruning length is one third, and new branches will soon grow on the edge of pruning. The new shoots can grow to about 30-50 cm in that year. 2. thinning. If the ginkgo tree grows vigorously, overlapping branches and cross branches are clustered, which affects the internal ventilation and light transmission, it should be properly thinned. When thinning branches, cut off branches that are growing too vigorously, dense branches, thin branches and drooping branches. When it germinates, wipe off the bad buds as soon as possible. 3. Retraction is short cutting, but it is mainly aimed at old branches, and pruning will be more powerful. Generally, only half the length of the original branch is kept, and only one third of the thick branch can be cut. It should be noted that the diameter of the incision should not exceed 5cm. 4. Picking the heart is necessary for any plant. In addition to controlling the height of plants, it can also promote the growth of branches. Potted ginkgo also needs topping, which can control the plant height and is very helpful to control the tree shape. Generally, when the branch grows to 15cm, the terminal bud is removed to promote the secondary growth of the branch. 5. Ring cutting will cut the cortex of ginkgo branches to the depth of xylem with a knife, which can promote their flowering and fruiting. But it is generally only used for vigorous branches. Although ring cutting of weak branches can also promote growth, the effect is often not as good as that of thick branches because of limited nutrition.

Matters needing attention in pruning ginkgo trees

In normal planting season, large branches must be pruned, and short branches are generally not allowed to be pruned. In order to maintain the natural tree shape of Ginkgo biloba, the branches should be drained when pruning, and the sprouting branches below the branch point and rhizosphere on the branches and the side branches with too many large branches should be removed. Ginkgo biloba leaves are spinning. If the big branches in the crown are dense and disorderly, the cross branches and overlapping branches in the verticillate branches should be thinned out, but not all the verticillate branches, so as not to increase the distance between layers.