Ring rot is one of the common diseases of camellia, it mainly damages the leaves of the plant, there are purplish red spots, and will slowly expand.When it infects the veins, the disease will accelerate and cause the leaves to wither.It is usually caused by bacteria, before the high incidence period of disease, carbendazim solution can be sprayed for prevention and control, after cutting off the diseased leaves in the early stage of disease, spraying treatment.
Anthracnose is harmful to many plants, and camellias are no exception.The disease, which occurs in June and July, causes brown spots on the tips or edges of leaves, which then spread to the whole leaf and cause it to fall off.If you want to treat it, you need to spray zineb solution at the beginning of the disease.Usually, phosphorus and potassium fertilizers or organic fertilizers should be applied to improve the disease resistance of plants.
Red spider is one of the common pests, it is distributed in many parts of our country, usually hatched in March, April damage is more serious.This pest will suck the juice of its camellia, causing its poor growth.In winter, prevention work should be done to eliminate overwintering eggs.When pests are serious, pesticides such as dicofol can be sprayed.
Leaf rollers are also common pests of camellias.It mostly occurs in spring and summer, and the larvae will gnaw new buds and other parts, resulting in leaf curling.Because adults like sugar and vinegar very much, they can be trapped and killed.In addition, the larvae can be killed by spraying phoxim and other drugs, or by spraying trichlorfon solution.
