white substance on hibiscus
several hibiscus in large pots, all of which fine with the exception of one that has a white power like substance on a few of the leaves. What type of treatment should I use?
Submitted by BHGPhotoContest

Hi
This sounds like Powdery Mildew. I'd take a sample to your local extension service or garden center for a positive identification and then  you'll need a fungicide to eliminate it. Powdery Mildew rarely kills a plant, but can make it look unsightly so you may or may not want to resort to sprays.

Answered by BHGgardenEditors