Lilac Powdery Mildew: Common and Recognizable

White, Anemic Leaves = Powdery Mildew

The white, anemic appearance of your lilac leaves is classic powdery mildew. It’s one of the most easily recognized plant diseases—white fuzzy patches on leaf surfaces.

Management

• Mostly cosmetic; lilacs tolerate it well.
• If severe, improve air flow and apply a labeled fungicide (see Extension bulletin).
• Send a photo if symptoms look different.

No need to panic—your lilac will survive and bloom again.