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What are the control methods for azalea leaf spot disease?

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Leaf spot is a major disease of azaleas. When it first appears, small brown spots form on the leaves; the spots merge with one another and gradually develop into large blotches, and the lesions become irregular in shape, darker on the upper surface and lighter on the underside. In the later stage, the center of the lesion turns grayish brown, and many black or grayish-brown spots form on the lesion. In severe cases, the branches are completely bare and the plant becomes weak. Control plan: at the early stage of the disease, spray 1:1:120 Bordeaux mixture, or 0.4 degree Baume lime sulfur mixture, or 65% zineb wettable powder at 500 times dilution, or 25% car

Leaf spot is a major disease of azaleas. When it first appears, small brown spots form on the leaves; the spots merge with one another and gradually develop into large blotches, and the lesions become irregular in shape, darker on the upper surface and lighter on the underside. In the later stage, the center of the lesion turns grayish brown, and many black or grayish-brown spots form on the lesion. In severe cases, the branches are completely bare and the plant becomes weak.

Control plan: at the early stage of the disease, spray 1:1:120 Bordeaux mixture, or 0.4 degree Baume lime sulfur mixture, or 65% zineb wettable powder at 500 times dilution, or 25% carbendazim wettable powder at 300 times dilution, spraying once every 10-14 days, for a total of 4 sprays.

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