Pests of chrysanthemum

Common pests of chrysanthemums

Chrysanthemum aphid

Symptoms: Aphids are the most serious insect pest that harms chrysanthemums. Aphids may harm chrysanthemums from the seedling stage to the flowering stage. Chrysanthemum aphid is the most widely distributed aphid. It mainly secretes mucus to make the stems and leaves stick together, causing them to curl and harm the young stems and leaves. April to May and September to October each year is the peak breeding period of chrysanthemum aphids.

Prevention and control methods: Dig up the topsoil around the roots of the plant, bury 3% furadan granules around it, then cover it with soil and water it. The aphids will die after sucking. After the chrysanthemum seedlings are planted and the scion is grafted, spray them once every 20 days with a mixture of 800 times carbendazim solution and 1000 times 40% omethoate solution.

Chrysanthemum spider mite

Symptoms: Chrysanthemum spider mites mainly parasitize on the back of leaves, which will harm the leaves and the back of leaves, and will spread from the lower leaves upwards. The mites will move to new leaves and new buds, causing the branches and leaves to turn yellow. When the damage is serious, the leaves of the entire plant will turn yellow, the flowers will become smaller, and the flowering period will be shortened.

Prevention and control methods: 1. Do not use branches with mites for cuttings

2. You can spray 0.2% urea on the plants where mites appear.

3. Check regularly and spray pesticides to prevent and control mites if they are found.

Whitefly

Symptoms: They live in groups on the back of leaves, sucking sap, causing the leaves to turn yellow and fall off.

Prevention and control methods: Use omethoate or spray 2000 times diluted 20% plasticizer for prevention and control.

Heartworm

Symptoms: Damage to chrysanthemum seedlings

Prevention and control methods: From late May to early July every year, flower lovers should spray the plants with 1000 times the amount of diazinon or cypermethrin solution every other month to prevent borers from harming chrysanthemum seedlings.

The above are the pests of chrysanthemum and their prevention and control methods! I hope flower lovers can find the right medicine for their condition!