Master Gardener: Preventing, treating powdery mildew | Home & Garden
I went away for the weekend and came home to find some my plants covered with what looks like a white powder. What should I do? — L.H.
It sounds like you are describing powdery mildew. Many plants can be affected by powdery mildew including azalea, crabapple, dogwood, phlox, euonymus,