Common Pests of Wintersweet and Their Control Methods

Wintersweet pests: Japanese wax scale

symptom

Nymphs and females suck sap from leaves and branches, often causing the leaves to turn yellow or sooty mold to develop. In the southern region, the females lay eggs in large numbers in mid- May , which hatch in mid- June . Male adults pupate and emerge in large numbers from late August to early September . This insect can spread the insect to other places by transporting infested seedlings.

Prevention and treatment methods

If a few plants are affected, they can be manually scraped off the branches.

Preventive measures should be taken in daily life, and regular spraying of 1500 times diluted 40% oxydemeton-methyl emulsifiable concentrate or 1500 times diluted 50% carbofuran emulsifiable concentrate will have better effects.

Wintersweet pests: cicada

symptom

This insect mainly harms flowers in winter. Its nymphs suck sap from the roots in the soil. The adults are more harmful and often cause branch death.

Prevention and treatment methods

Pay attention to searching for and killing newly emerged nymphs and newly emerged adults.

You can use incense to kill the insects, make them fall, and then clean up the insect bodies. Fumigation is best done at night.

At home, you can also wash out the sticky gluten from the dough and stick it on branches to catch adult insects.

Pests of wintersweet: Big sedge

symptom

This insect is also known as the debt-avoiding insect, and is commonly known as the "hanged ghost." It is a pest that harms many types of flowers. When this insect appears on a plant, you can see that the leaves have been eaten into holes or notches by its larvae. They may even eat all the leaves on the branches, leaving only the leaf veins, which is very harmful.

Prevention and treatment methods

The protective capsule of the large moth is obvious and can be removed at any time to kill its larvae. However, this type of pest rarely occurs in household potted plants.

In mid- July , spraying with 1000 times diluted 90% trichlorfon or 1500 times diluted 80% dichlorvos emulsifiable concentrate for prevention and control will have a better effect.