Trimming is an important technical measure for high-yield cultivation of Ginkgo biloba. Its basic principles are: according to the shape of the tree, light cutting and slow release, mainly pruning in winter, combining winter and summer, less thinning and not short cutting.

Pruning time of ginkgo tree

Small broken branches of ginkgo trees can be pruned, but big branches can be pruned all year round. Generally, trees are most suitable for pruning and reproduction when they fall leaves in autumn, and they can germinate in spring, but not as good as after autumn.

Ginkgo trees are usually pruned in summer and winter. In winter, plants are dormant and grow slowly, so pruning should be heavy, so that the stored nutrients can be concentrated, which will help the growth of new shoots in the next year and make them flourish.

Pruning method of ginkgo tree

1, shortcut

Short cutting is a very common pruning method, mainly for annual branches, which can promote the growth of branches and lateral branches by shortening. Usually, the pruning length is one third, and new buds will soon grow at the incision, which can grow to about 30-50 cm in that year.

2, refinement

If the ginkgo tree grows vigorously, overlapping branches and cross branches are clustered, which affects the internal ventilation and light transmission, it needs to be properly thinned. When thinning, cut off long branches, dense branches, thin branches and drooping branches, and smooth the buds with bad direction as soon as possible when they sprout.

Step 3 take it back

Retraction is also short, but it is mainly aimed at old branches, and the pruning will be stronger. Generally, only half the length of the original branch is kept, and only one third of the thick branch can be cut off. It should be noted that the diameter of the incision should not exceed 5 cm.

4. Choose your heart

For any plant, it is necessary to remove the heart, which can not only control the plant height, but also promote the growth of branches. Potted ginkgo also needs coring to control plant height, which is very helpful to control tree shape. Generally, when the branch grows to 15 cm, the terminal bud is removed to promote the secondary growth of the branch.

5. Ring cutting

Cutting the cortex of ginkgo branches to the depth of xylem with a knife can promote their flowering and fruiting. But it is generally only used for vigorous branches. Although 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 the normal planting season, big branches must be trimmed, but generally do not cut short big branches. In order to maintain the natural tree shape of Ginkgo biloba, the branches should be thinned when pruning, and the sprouting branches on the trunk and the rhizosphere below the branch point, as well as the over-dense side branches on the big branches should be eliminated.

Ginkgo biloba leaves in rotation. If the branches in the crown are dense and disorderly, it is necessary to remove the cross branches and overlapping branches in the rotation branches, instead of all branches in the rotation branches, so as not to increase the distance between layers.