Powdery mildew appears as white or gray spots on roses, usually during warm, humid conditions. Catching infections early is key to stopping them from spreading by removing diseased parts and applying ...

A stunning mixture of pink and purple hydrangeas - Fanpro/Getty Images Hydrangeas are a favorite flowering shrub among gardeners. With their dark green leaves and big, showy blossoms in shades ranging ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you've spotted those signature white or gray powdery dots on your shower curtain or wall, you're ...

Add Yahoo as a preferred source to see more of our stories on Google. Closeup shot of a jade plant - Veena Nair/Getty Images We may receive a commission on purchases made from links. Aside from the ...

A global fungal invader is threatening blueberries everywhere. NC State researchers found that Erysiphe vaccinii, the culprit behind powdery mildew, has escaped its U.S. roots and spread across ...