How to prune artificially planted forsythia suspensa

According to the characteristics of natural growth of trees and the climatic conditions in Ledu County, natural happiness and shrub shape are more suitable for the shaping and pruning of forsythia suspensa.

1. Natural happy shape

When the height of the plant is about 1m, the top is cut off at 70 ~ 80 cm from the ground, and then the core is removed in summer to promote its multi-branching, cultivate the main branches and secondary branches, and release the lateral branches. After several years of shaping and pruning, a natural happiness tree with low crown, hollow inner and outer rings, ventilation and light transmission, moderate branch density and early fruiting was formed. At the same time, dead branches, overlapping branches, crossed branches, delicate branches, clustered branches and pest branches should be pruned every winter, and branches that have blossomed for many years and begun to age should also be pruned or cut off. The trimming mouth should be coated with calluses in time to protect the wound, and the whole garden should be sprayed with general tree protector for sterilization and disinfection to reduce the source of germs.

2. Shrub shape

In the early spring of the second year of planting, the top of the plant 20 ~ 25 cm above the ground was cut off on the plot selected for cutting cultivation. When the temperature rises in spring, the roots begin to move, and the nutrients stored in the roots are transported upward and gathered in short stumps, which stimulates the germination of hidden buds. Usually, there are 6-8 branches, which are primary branches (skeleton branches). Under the condition of increasing fertilizer and water management, branches grow rapidly. When the branches grow to about 25cm, the terminal buds are removed to make them have secondary branches, and each primary branch can germinate secondary branches above 10, which can be used as cutting materials in autumn or next spring. In the future, collect the third or fourth branches sprouting on the second crop.