In order to maintain the graceful and symmetrical plant shape and proper branches, maintain the balance between aboveground and underground growth, ventilate and transmit light, and make the flower buds full and blooming, it is necessary to carry out plastic pruning.

1 time. Every year around the vernal equinox, that is, in late March, when the buds grow to 3 ~ 5 cm.

2 methods. Peony tends to send out many budding branches from the root neck. It didn't bloom that year and consumed nutrients. Should be cut off in time, so that nutrients can be supplied to the buds. Some of the annual branches on it also give off many branches, so they should be cut off in time.

③ Fixed branch. According to the needs and tree potential, several branches with vigorous growth, symmetrical growth and uniform distribution are selected as the trunk of the plant. Generally, 5 ~ 7 branches can be left in 3 ~ 4 years. Cut off diseased branches, diseased branches, old branches, dead branches, side branches, overlapping branches, cross branches and inward branches.