Pruning methods are mainly short cutting and thinning branches, and other pruning methods are comprehensively applied. The flower buds (or mixed buds) of flowering shrubs in early spring are planted on biennial branches, such as plum blossom, Daphne odora in Phnom Penh, peach blossom and forsythia suspensa. In the summer and autumn of the first year, after a low temperature stage in winter, it blooms in the spring of the second year. Therefore, pruning should be carried out when the leaf buds begin to swell after the flowers remain. The location of pruning varies with plant species and pure flower buds or mixed buds. Forsythia suspensa, ebony, peach, Yingchun, etc. 2 ~ 4 full buds can be left at the base of the flower branch for short cutting. Peony can only cut off residual flowers. For flowering shrubs in summer and autumn, plant flower buds (or mixed buds) on the branches of that year, such as crape myrtle, hibiscus, pearl plum and so on. , forming buds on the branches of that year.
Therefore, pruning should be carried out during the dormant period. Leave 2 ~ 3 complete buds or a pair of opposite buds at the base of biennial branches for re-cutting. After cutting, some strong branches will sprout, with fewer flowers, but due to the concentration of nutrition, larger flowers will bloom. If some shrubs want to bloom twice in the same year, they can cut off the residual flowers and their 2 ~ 3 buds after flowering to stimulate the occurrence of secondary branches, and they can bloom twice by increasing fertilizer and water appropriately. A flowering shrub with flower buds (or mixed buds) attached to perennial branches.
Such as bauhinia, begonia and so on. Although most flower buds are planted on biennial branches, perennial stems can differentiate flower buds under suitable nutritional conditions. For flowering plants in this kind of shrub, the pruning amount should be small, and the dry part of the tip of the branch can be cut off in early spring. In the growing season, in order to prevent flowering branches from being too lush and affecting flower bud differentiation, we can pick the core and concentrate nutrition on perennial branches.
Flower buds (or mixed buds) are planted on flowering shrubs, such as Xifu Begonia. These shrubs have strong growth potential in the early stage, and most of them sprout from the base every year, and a large number of erect branches appear on their own branches. When plants enter flowering age, most branches form flowering short branches and bloom on them for many years. Generally, these shrubs are not pruned, and the residual flowers after flowering can be cut off. When they grow vigorously in summer, they can be properly removed to inhibit their growth. Flowers and shrubs that bud and bloom many times a year, such as Chinese rose, can cut short the branches of the current year or retract the strong branches during the dormant period, and at the same time cut off the cross branches, disease and insect branches, combined branches, weak branches and branches with too dense cavities. Strong shearing can be carried out in cold areas, and soil should be covered to prevent cold when necessary. It can be pruned many times during the growth period, and it can be shortened when the new shoots are full of buds after flowering. The cut buds germinate quickly, sprout, form buds and then bloom, and then cut after the flowers wither, and so on.