New field trials show that it kills a powdery mildew that would otherwise damage vine leaves and destroy grapes. Many urban dwellers don’t realize that mildew is more than the unsightly bane of shower ...

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 ...

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 ...