How to control common pests of potted flowers and plants in Milan?

1. Aphids: spray plants with cigarette butts or pepper water. It can also be sprayed with 800 times liquid of mifepril. If the quantity is small, it can be brushed off manually with a small brush.

2. Scale insects: spray with Jiejie l500 times liquid. When the quantity is small, it can be brushed off manually with a brush.

3. Rainbow spiders: spray plants with dichlorvos 1000 times or dimethoate 2000 times.

4. Soot disease: it is easy to occur with high temperature, high humidity and poor ventilation. Prevention and control methods: improve the environment, rinse leaves and branches with water, or spray with 1000 times of methyl topiramate.