[Liste] 64 Leaf Spot Azalea Diseases Pictures

Control phyllosticta leaf spot disease by raking up all fallen leaves and avoiding the use of overhead watering to prevent wetting of the leaves. Spots on rhododendron leaves.

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Spots may become tan in the center and may have a yellow halo. Azalea gall this azalea disease commonly occurs in early spring on new leaf growth. Irregular and colored spots on leaf. Throughout the year fungal spots cercospora species septoria species phyllosticta species and colletotrichum species of various colors appear on azalea and rhododendron leaves the diseases caused are usually minor only affecting the aesthetic value of the plant.

Start spraying at end of bloom period and continue at 2 to 3 week intervals until mid june. As the disease progresses the spots become white with a sort. Any rose fungicide will do. As shown by some pictures here the galls range from small thickenings on leaves to large irregular to round galls up to 2 in diameter extending beyond the leaves and flower buds.

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