Powdery Mildew

Powdery mildew is a fungal disease that causes a white coating on leaves, stems, and flowers of plants. Powdery mildew attacks beans, peas, lettuce, cucumbers, melons, pumpkins, squash and other plants including many annual and perennial flowers and shrubs. Powdery mildew fungal spores germinate on the dry surface of leaves when humidity is high and…