Pruning the branches and leaves of Sophora japonica can further adjust the rational distribution of nutrients, inhibit excessive growth, promote flower bud differentiation, blossom and bear fruit in advance, and also prolong the flowering and bearing fruit period, rejuvenate the old tree and improve its ornamental value.

Pruning time of Sophora japonica

Robinia pseudoacacia is generally best pruned before the end of winter and spring. If it is trimmed in other seasons, don't trim too much. Pruning is usually about 3 times a year, in summer, autumn and winter.

Pruning propagation of Sophora japonica

Pruning and propagation of Sophora japonica in spring is the best. At this time, the temperature is suitable and the air humidity is high, which is suitable for rooting and sprouting.

Pruning method of Robinia pseudoacacia

1. When Sophora japonica is planted as a street tree, it is generally multi-headed, with a plastic belt of about 2.5 meters. After young trees are planted, management should be strengthened to promote strong seedlings, and backbone branches should be cultivated on this basis. 2. When pruning in summer, 4~6 branches with strong growth and good orientation should be selected in the plastic belt, and the tender tips of the rest branches can be pinched off. When pruning in winter, 3~4 main branches should be selected, and short branches of about 80cm should be left according to the growth situation. If the growth is not enough, you can cut lightly or not see the top. 3. As a street tree, Sophora japonica sometimes meets wires, which hinders the development of trees to high altitude. Open-heart surgery can be used, and 3~5 thick, evenly distributed and oblique branches are selected as the main branches, and the rest are cut off. The top of the main branches of street trees should be neat, and the rest of the main branches should be cut short at last.

Matters needing attention in pruning Robinia pseudoacacia

After Robinia pseudoacacia is gradually formed, branches can be thinned in winter, such as whorled branches, clustered branches, twigs, branches with diseases and insect pests, over-dense branches and dead branches. Reduce the occurrence of pests and diseases. After each pruning, it should be kept in a ventilated place and provide astigmatism.