Powdery Mildew

Powdery mildew on rosemary. (Photo from Flickr by Scot Nelson)

How to treat powdery mildew on rosemary?

Beckie Fox

When I bring my rosemary plants into the house for the winter, they get a powdery mildew that kills new growth. How do I treat this?

Mildew-resistant lilacs

Judith Adam

Dealing with powdery mildew on lilacs can require replacing them with mildew-resistant cultivars. Mildew spores are active in late summer.