If it is pruned in winter, and the temperature in this area (such as Beijing) is low and the wind is strong in spring, you can keep 2 inches of lignification from top to bottom to the 1 th terminal bud, and keep a certain lignified part or petiole to protect the bud.
Extended data
The basic step of pruning peony should be "one observation, two changes, three cuts and four inspections".
When pruning steamed meat, all dead branches, diseased branches, weak branches and residual flowers and leaves of peony should be removed first. The flower buds and branches of peony are treated according to the above method of "growing one foot and retreating eight inches".
Secondly, we should remove too dense branches. Too dense branches are easy to disperse nutrition, and limited nutrition should be used when a small number of buds bloom to ensure the quality of flower bud differentiation in the next year.
According to the principle of "three days to go to the middle", that is, when multiple branches are dense at a branch point, every three branches should be "strong" once, and 1~2 branches should be removed to ensure the overall shape of peony and the quality of branches left behind. After that, all the crossed branches and too dense branchlets are cut off, leaving only the lateral oblique branches, which are "curved and straight" to maintain the overall shape of peony. Finally, the sprouted branches at the base should be removed.
If pruning is carried out in spring, it should start in the spring of the second year after planting. According to the local climate characteristics, it is usually carried out at the end of March when the bud grows to about 5cm. Premature shoots are not obvious, which is not easy to weaken and maintain exuberance, and is also easily affected by low temperature. The buds on the new branches that germinate too late are lignified, which will consume nutrients in the growth and development of leaves. Therefore, it is necessary to choose the appropriate climate and timing for pruning.
First, cut off the remaining pedicels, dead branches, branches and leaves on the peony branches, and remove the covering soil and sundries on the root neck. Then, according to the size, variety, cultivation purpose and growth years of the plant cluster, 7-8 or 1 1~ 12 evenly distributed and fully grown branches are selected, and other redundant branches are cut off, as well as dead branches and pests. After that, the peony should be "washed" as before.
In order to make peony flowers colorful, it is necessary to sparse flowers and wipe buds. That is, in early spring, only 1~2 robust buds on each selected branch are kept, and other buds and adventitious buds on old branches are erased in time. For some varieties with strong growth potential, good branching ability and flowering rate, 1~2 buds should be left on each branch as appropriate to make them grow and bloom, increase the amount of flowers and extend the flowering period appropriately.
The lateral buds of branches should be selected when the buds are left, and the cutting distance should be 1~ 1.5cm, which will easily form dry piles and affect the beautiful plant shape; Too close will affect the growth and flowering of buds. In order to make the wound small and heal quickly, flat scissors are generally chosen.
Peony should be rechecked in bud stage, and all branches that have not sprouted or failed to blossom should be cut off as appropriate to concentrate nutrients for the growth and flowering of flowering branches.
Pruning peony is of great significance to the growth and development of peony plants. In addition to the precautions reflected in the steps, it is also necessary to make it clear that you should not leave too dense branches and dare to prune them. Leaving more sparse and outgoing branches is more conducive to improving their nutritional distribution and ornamental value.