In fact, the disease of Forsythia pseudoacacia is rare, and the most common is sunburn. For this kind of disease, the effective control method is to control the light, on the premise of ensuring sufficient light, reduce the sun burst and long-term direct sunlight, and properly spray water and shade the plants to avoid the occurrence of sunburn.
The common pests of Forsythia suspensa include aphids, caterpillars, diamond heart insects and snails.
The control of aphids and caterpillars is mainly in the growth period of pseudoforsythia plants, especially in pruning plant branches, cutting off the diseased branches in time, which can reduce the occurrence of aphids and caterpillars. In addition, chemical treatment can also be used, that is, spraying 1000 times of Omethoate solution on the leaves.
The borer is very harmful. It enters into the stem of pseudoforsythia in larval stage, which leads to the failure of flowering and bearing of pseudoforsythia, and even more serious, the whole plant will die. The prevention method is to clean up the fallen leaves and dead branches in time in winter to remove the insect eggs, trim the branches and leaves in time to deal with the injured branches and leaves, or poison the pests with 40% dimethoate cream 500 times liquid or 80% dichlorvos original liquid..
Strictly speaking, snails are not pests, but they can harm flowers and larvae. The prevention method is to sprinkle lime powder around the false Forsythia for prevention and control. In addition, it can also be killed manually to reduce the harm.
