Peony likes fertilizer, when cultivating, apply farm manure as a base fertilizer, and timely topdressing according to needs, generally 3 times a year. The first time was in early March before fertilization, the second time was after flowering, and the third time was in late October.
Timely remove the branches and shoots, dead branches, diseased and insect branches of the peony, keep the plant with a balanced and appropriate amount of branches and beautiful plant shape, so that it is ventilated and transparent, and the nutrients are concentrated, so that it can grow vigorously and blossom consistently. Plastic surgery is generally carried out 3 times a year, the first time should be carried out in early to mid-March, leaving a few branches with robust growth and reasonable spatial layout as the main trunk; removing too many buds, so that their nutrients concentrate on supplying the main buds; and removing the buds of the roots in time. The second pruning is at the bud stage, cut off the unwanted buds, the flowers bloom after the bloom, should be cut off in time to reduce the consumption of nutrients. The third pruning is carried out from October to November after leaf fall, mainly to remove dead branches and dead leaves. The third trim can also be omitted.
After the peony flowers, with the warmer weather and more rain, easy to occur erythema, brown spots, white powder, anthrax and other fungal diseases, to spray drugs for prevention and treatment, such as carbendazim, bacillus, methyl tolbuzin, daisen manganese zinc and other bactericidal agents, can be carried out according to the instructions for use, starting in mid-May, every 2 weeks, at least 3 times. If there is no prevention, the disease is serious and can be carried out once a week. Peony is prone to underground pest grubs, and can be sprinkled with octylthion granules when planting, which is valid for about half a year.
In late autumn, the leaves will be attached to the eggs and hyphae, and it is best to clean up the fallen leaves. Proper sealing of the soil before entering the winter can resist the cold, and the warmer weather in the spring will pull the soil apart.