In order to promote the growth of paulownia trees, it is necessary to prune them in time. The pruning time is suitable before the germination in early spring. The amount of trimming should be reasonable and appropriate, and the incision should be smooth to promote wound healing. Through the plastic pruning of Paulownia, the pseudobifurcate branch is transformed into the synaxy branch to form a tall synaxy trunk or conic crown, which is conducive to timber and good ornamental effect.
Cutting the tip and wiping the bud can cultivate the straight Paulownia seedling stem. Generally, cut off the curved and weak tip at the full bud, and remove 4-5 buds below the cutting bud. The cutting bud can form a new main tip. Pay attention to that the cutting bud must be full and strong, with the tip of the bud facing up.
Prune over dense branches, Cross branches, weak branches and disease and pest branches, and do light cutting for weak branches and heavy cutting for strong branches. Cut smoothly. Sparse branches can weaken the overall growth, but for the remaining branches, especially the lower branches, it can enhance the growth; at the same time, it is conducive to ventilation and light transmission, and can promote the growth of the trunk and early flowering.
Short cutting is to cut off a part of the branch, which can stimulate the germination of the lateral buds under the cutting mouth, and draw out new shoots, which can increase the number of branches and facilitate more flowering. In a certain range, the heavier the short cut, the more vigorous the sprouting shoots.
Retraction is to cut the branches that are 2 years old or more. The senescent branches or the base of the trunk should be kept for a while, and the rest should be cut off to promote the vigorous growth of the branches at the lower part of the scissor mouth. It can also stimulate the dormant buds to sprout the extra long branches, which is conducive to the cultivation of a new crown.
It is mainly used for the rejuvenation and renewal of the excellent trunk. By removing all the above ground branches near the ground to stimulate the sprout regeneration near the root neck of the plant, the dry shape can be completely transformed.
