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A healthy azalea should not have a white film on the leaves. White film on the leaves of an azalea are a symptom of mildew, a common plant disease. Use a broad-spectrum fungicide to kill the mildew, and remove any dead or fallen leaves to cut down on mildew spores in the area. To prevent mildew in the first place, do not overwater your azaleas and ensure they have good draining soil and adequate sunlight to help dry leaves and flowers after a rain.

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15y ago

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