What if there are insect pests on roses?

The common pests that harm roses are leaf-cutting wasp, stem-leaf wasp, rose night moth, blow cotton scale and red spider. The main control methods are as follows: 1. Leaf-cut bees. It mainly harms the tender leaves of plants, and when a large number of them occur, the complete leaves can be bitten into incomplete ones in a short period of time. It is mainly controlled by manual killing of adults or spraying 1000 times of fenitrothion to the nest. two。 Stem and leaf wasp. It mainly harms the stem of the plant, causing the branches to wither and lead to the death of the plant. Check the pulp of the stubble when pruning in winter. If you find a moth, drop 1-2 drops of pyrethroid insecticides and seal it with mud to control it. If the tender branches have been damaged, they should be cut off and destroyed. 3. The middle night moth. The larvae mainly harm leaves, buds and flowers. Spray control with 1000-1500 times liquid of 90% crystal trichlorfon or 1000 times solution of fenitrothion EC. 4. Red spider. It mainly harms the positive and negative sides of the leaves, causing the leaves to dry up and fall off. At the initial stage of the disease, 20% triclofenac wettable powder was sprayed with 800-1000 times liquid, once every 2 weeks, twice in a row.