Apple Powdery Mildew

Symptoms

White, powdery, felt-like fungal growth on shoots, leaves, and blossoms, causing leaf curling and a rough, russeted fruit skin.

Favorable conditions

• •Warm, dry days with high humidity at night
• •Susceptible cultivars and vigorous new growth

Management

1. 1Apply sulfur or a systemic fungicide during the growing season
2. 2Prune out infected shoot tips ("flags") during dormant pruning
3. 3Plant resistant varieties