Diseases and Pests of Axillary Lip Orchid and Their Control

Anthracnose of Axillary Lip Orchid

disease

This is the most common disease of orchids. It mainly causes spots to grow on the leaves, followed by small black spots, which eventually cause the leaves to turn yellow. This disease often occurs in the rainy seasons of May-June or September-October.

Prevention and treatment methods

Diseased leaves should be cut off and destroyed immediately, and ventilation and light should be increased;

Improve the watering method by slowly pouring water from the edge of the flower pot;

After new leaves grow, spray 1-2 times of Bordeaux mixture (1:1:140) for prevention. If symptoms appear, spray 500-600 times of 50% carbendazim solution.

Leaf blight of Axillary Lip Orchid

disease

It mainly manifests itself on the leaves. Reddish-brown spots will appear in the early stage, and then the spots will quickly expand into black-brown, and eventually the leaves will turn yellow and die.

Prevention and treatment methods

Remove diseased leaves immediately and destroy;

Improve ventilation and light transmission, avoid overwatering, and do not spray water directly on the plants;

If symptoms occur, use 600-800 times of 50% thiophanate solution in time, spray once every 10 days or so, and spray 3-4 times in a row.

Sclerotium rotum

disease

It is easy to occur in hot and rainy seasons, with May to August being the susceptible period. It is caused by fungal infection. The cortex infected with the bacteria turns brown and necrotic.

Prevention and treatment methods

Remove the infected parts promptly and spread lime for disinfection;

Before planting, soak the potting soil with 1000 times of 30% soil seedling water-repellent to prevent diseases.

In the early stage of the disease, you can spray the roots, stems and leaves with 1:500 times of thiophanate-methyl.

Scale insects of Axillary Lip Orchid

disease

The most common are shield scale and mealybug. The most serious period is from May to October, and it also occurs occasionally in winter. The disease has a strong reproductive capacity and can reproduce multiple generations in a year, and the generations can overlap.

Prevention and treatment methods

When the disease occurs, use a soft brush to brush out the worms and rinse them with water;

When there are many insects, spray 1000 times of 40% Supo Killer Emulsion on both sides of the leaves every 5-7 days, and spray 3-4 times continuously.

Red spider mites

disease

It is easy to occur during the high temperature period from June to August, and the red spider has a strong reproductive capacity, so the damage is very serious.

Prevention and treatment methods

If the amount is small, you can use a soft brush to remove it and rinse it with clean water;

If the number is large, spray the affected area with 1000 times 40% dicofol solution;

You can also light a plate of mosquito coils in the pot and seal it with a plastic bag. The insects can be killed after 1 hour. This method will not affect the plants.