How does Powdery Mildew Spread

Powdery mildew is that white talcum-like appearance of certain types of leaves. Find out how powdery mildew spreads with help from a certified horticulturist in this free video clip. Expert: Donna Emery Filmmaker: Jeff Goodey Series Description: Gardening is a great way to pass the time and make sure that you have a great environment to come home to. Get tips on gardening with help from a certified horticulturist in this free video series.