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.

We may receive a commission on purchases made from links. Something is awry -- those prized tomato plants no longer have deep-green leaves. Instead, they're mottled powdery white. Nothing ruins a ...

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, ...

“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 ...

Mildews are the most common and most devastating diseases infecting cucumbers and other members of the cucurbit family of plants, which include squashes, pumpkins, zucchini and melons. There are two ...

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 ...