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Cooperative Extension: Insect Pests, Ticks and Plant Diseases

Astilbe – Powdery Mildew

Erysiphe polygoni

Astilbe – Powdery Mildew Signs & Symptoms

: Powdery mildew on leaf

: Leaf underside affected

Astilbe – Powdery Mildew Pathogen

: Powdery mildew conidium

: Conidia

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