Powdery Mildew

Identification “Powdery mildew is a common disease on many types of plants. Several powdery mildew fungi cause similar diseases on different plants (such as Podosphaera species on apple and stone fruits; Sphaerotheca species on berries and stone fruits; Erysiphe necator on grapevines). Powdery mildew fungi generally require moist conditions to release overwintering spores and for […]