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How to control pests on the underside of azalea leaves?
(1) Red spider mite. The individual is extremely small, with a body length generally around 0.3 mm, difficult to see with the naked eye, and observation requires the aid of a magnifying glass. The body is red, and it often gathers on the underside of leaves, mainly sucking the plant's sap and causing grayish-white spots on the leaves. In severe cases, it causes the leaves to turn yellow and drop, new shoots grow poorly, and the tree vigor weakens. Red spider mites produce 10 generations a year, and the damage is especially severe during high temperature and drought from June to August, but the damage is lighter during heavy rain and rainy weather. In winter, dead branches and fallen leaves should be cleared away to eliminate overwintering adults
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