1. During the growth and cultivation period, generally before spring germination, the uncoordinated longer branches are cut short to keep the overall plant shape neat. After germination, it is necessary to prune the dense branches and soil buds in time, erase the redundant lateral buds, keep the strong ones and the weak ones, and keep the ventilation and light transmission, which is beneficial to the health of plants.

Picking flower buds during the expansion period of the flower buds; It is necessary to remove the residual flowers of flowering peony plants at flowering stage to reduce nutrient consumption; Pruning should also be carried out at the end of autumn, generally cutting off weak branches, pests and diseases, dry branches and leaves, and centralized burning to reduce the occurrence of pests and diseases in the following year.

Ornamental peony is generally thinned and reshaped in February, and some old branches are shortened and updated to achieve the purpose of rejuvenation; During bud development, weak buds and deformed buds should be picked to ensure the centralized supply of nutrients; Cut off the residual flowers in time after the flowers; Cut off weak branches, pests and diseases, dry branches and leaves at the end of autumn and burn them centrally.

I'm sure you can understand.

2. Paeonia suffruticosa and Paeonia suffruticosa are not heat-tolerant, and the edge of leaves will be scorched in this season, mostly due to the high temperature in summer. Of course, anthrax can also occur, and it can be controlled by spraying carbendazim 1 ~ 3 times. Moderate shading and cooling in summer is also an effective prevention.