If a white, dusty coating suddenly appears on your houseplant’s leaves, don’t panic—but don’t ignore it. “Powdery mildew is a type of fungal infection that affects plants,” says Bex Claire Hamell, ...

Add Yahoo as a preferred source to see more of our stories on Google. A stunning mixture of pink and purple hydrangeas - Fanpro/Getty Images Hydrangeas are a favorite flowering shrub among gardeners.

“My red rhododendron looks as if it has a layer of ash or white powder on it (above). What should I do?” asks Birds & Blooms reader Steven Graves of Aptos, California. Horticultural expert Melinda ...

Stopping powdery mildew early saves houseplants by protecting photosynthesis, preventing spread, and avoiding long-term leaf damage. Remove infected leaves quickly, isolate plants, and treat with ...