According to the requirements of shaping, the pruning of newly planted young trees should be light and slow, with the aim of expanding crown, promoting shaping, relaxing tree vigor and blooming early, and it is suitable for light pruning.
Don't grow a lot of branches unnecessarily because of a lot of pruning, which is extremely unfavorable to the quantity, quality and effect of flowering.
Pruning and modeling of Chimonanthus praecox bonsai can be divided into the following three stages: 1. After flowering, before budding, change the soil in the pot, carry out plastic pruning, and cut off dead (root) branches, pests and diseases branches, over-dense (root) branches and other branches that affect the tree shape.
For all the annual branches to be left, according to the morphological needs of their respective parts, 1 ~ 3 is generally left to cut the buds. Only in this way can the new shoots grow normally, with full tree shape, thick nodes and dense flower buds, laying a good foundation for more pregnant buds and dense flowering in the later stage.
Second, because Chimonanthus praecox has strong germination ability, in order to reduce nutrient consumption and make the remaining branches grow vigorously, combined with the needs of plastic surgery, useless branches that affect the tree shape, such as sprouting branches at the base, too dense branches, slender and moderate branches, should be cut off in time.
Bonsai modelling technique is used to prop up and pull some branches, correct and increase the angle of branches, ease the tree vigor, and achieve the purpose of controlling vegetative growth and promoting reproductive growth.
When the branches grow to 8 pairs of leaves, leave 6 to 8 pairs of leaves (length10cm) for topping or core removal.
Sometimes, secondary branches and tertiary branches will grow, and they will be cut off in the same way, which can remove the growth potential of their respective tops, control overgrowth, promote the growth of lateral branches, prevent overgrowth of nutrients, promote the transformation from vegetative growth to reproductive growth, strengthen the nutrient accumulation of main branches, and concentrate nutrition to promote flower bud differentiation, thus achieving the purpose of vigorous growth and more flowering.
For the older adult Chimonanthus praecox bonsai, the growth of branches has obviously slowed down due to a large number of flowers for many years.
When pruning, we should consider how to balance the tree potential, solve the contradiction between vegetative growth and reproductive growth, improve ventilation and light transmission conditions, and maintain and maintain a good tree shape.
Therefore, pruning should be aggravated year by year, and some backbone branches should be retracted and updated in time. For some aging Chimonanthus praecox bonsai, water and fertilizer management should be strengthened in time to promote the recovery of trees as soon as possible, so as to keep them growing and blooming vigorously for a long time.
3. In early winter, the buds on the branches of Chimonanthus praecox have spread out. At this time, all the leaves should be removed in time, and some branches with few buds or no buds should be thinned according to the modeling requirements of Chimonanthus praecox bonsai, so as to reduce the situation of flourishing leaves and no flowers, which can fully highlight the landscape effect of fewer branches and more flowers.