“Help, my plant is covered in a white, powdery fungus! What do I do?” First, don’t panic. While powdery mildew may not look pretty, it rarely causes significant damage except in cases of severe ...

Q: Ive got a Diabolo ninebark thats been getting a whitish powder all over the leaves. Eventually the leaves drop. Its looking pretty bad. What should I do? A: The problem is powdery mildew, a fungal ...

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 ...