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 ...

Powdery mildew is a fungal disease affecting many plants, causing a white or gray coating on leaves and slowing growth. The fungus thrives in warm, dry weather with high humidity, especially in ...

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 ...