Latest Pest and Disease Control Methods for Rhododendron molle

Leaf gall disease

Since Rhododendron molle is also a type of azalea, it is quite prone to leaf gall disease, and the probability of infection is relatively high. Spots may appear on the front or back, and in severe cases both stems and leaves will swell; in severe cases, it looks like a biscuit. This disease is most likely to appear from March to May. When symptoms appear, first remove the diseased leaves, but do not throw the removed leaves away casually; it is best to burn them so that the disease will not spread, and then spray with a specialized chemical.

Leaf spot disease

This disease is still relatively common. You can guess the symptoms from the name of the disease: diseased spots grow on the leaves. After encountering the symptoms, as with the previous situation, first remove the leaves and burn them, then protect the plants that have not yet developed the disease. Spray chemicals regularly, once every 10 days, for a total of 7-8 sprays. If you are afraid the leaves will turn yellow, you can also add a little ferrous sulfate to it.

Azalea lace bug

This insect is also relatively common. Although this plant is toxic, it does not affect the survival of this insect. They mainly gather on the underside of leaves to feed, causing the entire underside to change color. If control is not timely, the entire leaf may turn white and the leaves may fall early, so observation must be more careful. Prevention should be done before planting: first clear all weeds and fallen leaves in the soil, then kill all overwintering eggs with chemicals. If symptoms appear, promptly remove the diseased leaves, dispose of them, and then treat with a specific chemical.

Red spider mite

This is also one of the more common types of pests and diseases. Some spots will appear on leaves that have been sucked on, and when the sucking is severe, the entire leaf will fall. The higher the temperature, the more likely it is to appear, especially when it is dry and hot. But in rainy weather it is not so severe, so water should be replenished in time. In winter, pests and diseases should be killed in time, and when damage occurs in March, spraying should continue.