azalea - Knowledgebase Question

Monroe, Ge
Question by patgreen
May 23, 2010
Rust/copper deposits on new leaves. Have treated with Bayer Tree & Shrub. Is this a fungus? Is there a spray for this ?

Answer from NGA
May 23, 2010


Small bright yellow spots is a symptom of azalea rust, Puccininastrum vaccinii, a fungal disease. Orange-red pustules containing spores form on the lower surface of the leaf. You can treat with Microcop, a copper based fungicide. Good air circulation is helpful.

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