Peony planting: what are the peony diseases and insect pests?

What are the diseases and insect pests of peony flowers? How to control these diseases and insect pests? Please guide the common pests of peony flowers are aphids, leaf rollers and cabbage worms; the common diseases of peony flowers are soft rot and downy mildew; detailed control methods can be listed as follows: 1. Aphids have strong fecundity and can reproduce many generations a year, and a large number of aphids often gather on kale leaves and tender stems to suck up juice. Control method: in the first episode of aphids, 40% omethoate, 1000-1500 times of dimethoate or 1000-1500 times of phoxim emulsion can be sprayed. 2. The leaf roll moth is commonly known as the leaf curler, which is harmful to its larvae and often rolls up the leaves with silk and hides and feeds in them. Method 1. Clean and burn the withered grass and fallen leaves around the planting site in winter to eliminate overwintering insects. Method 2. It was found that the bracts of the kale leaf moth were removed or directly pinched to death. Method 3. When the leaf roll moth has a large number of larvae, 50% fenitrothion or 80% dichlorvos EC or 50% phoxim 1000-1500 times can be sprayed. It can also be sprayed with amine naphthalene wettable powder 1000-2000 times. 3. The adults of Pieris rapae are active during the day, the eggs are laid on the back of the leaves, and the larvae feed on the mesophyll in groups. After 3 years old, the damage was dispersed and fed sooner or later at the back, surface or tender tip of the leaves, and the damaged leaves were notched. Method 1. Larvae can be captured manually. Method 2. A large number of larvae were sprayed with 80% dichlorvos EC or fenitrothion 1000-1500 times. Spraying with 40% omethoate 1500-2000 times solution also has some effect. 4. Cabbage insects, Plutella xylostella and aphids can be sprayed with 50% phoxim EC 800 × 1000 times or 2.5% Kung Fu EC 2000 times 3000 times. Peony disease control methods: 1, 70% methyl thiophanate wettable powder 600 times, or 70% mancozeb wettable powder 500 times spray. 2. 2. 50% Sukeling wettable powder 1000-1200 times or 58% Metalaxyl manganese-zinc wettable powder 500 times spray can be used in the initial stage of downy mildew. Click to get more peony planting techniques click to get more flower planting techniques