1、 Rose stem leaf bee

Harm: rose stem and leaf bee is a pest that damages the stem of the plant. It can lead to the withering of branches and even death in severe cases

Control method: when pruning roses in winter, check the roots to see if there are borers eroded by pests. After discovery, drop two drops of dichlorvos and seal the mouth with mud. If the twigs are eroded, they need to be removed and burned intensively

2、 Noctuid moth in Rose

Harm: the larvae of noctuid moth in Rose feed on the leaves of rose. It can also harm flower buds and petals

Control method: larvae can be captured manually and adults can be lured and killed with black light lamp. It can also be sprayed with trichlorfon or fenitrothion after full dilution

3、 Starscream

Harm: red spider is a common pest. It will harm the leaves, absorb the juice on the leaves and cause them to dry and fall off

Prevention and treatment: Starscream is small, difficult to find, and very easy to relapse. It needs a long time to prevent and control. Firstly, the eroded leaves should be removed and destroyed, and then the pests should be sprayed with dicofol mixed with water. The medicine should be sprayed on both sides of the leaves every 15 days

4、 Aphid

Harm: aphids are also one of the common pests. It will appear all year round, which will do great harm to young branches and new leaves, lead to leaf curling and brittleness, and affect flowering

Control method: wipe off the aphids with a brush or wet cloth, and cut off all the branches and leaves damaged by aphids. The fallen leaves should be treated in time to reduce the possibility of survival of insect eggs. In addition, you can mix washing powder with water and spray it