Is this a case of powdery mildew? My wife has miniature roses on our 37th floor balcony. The wind is pretty
vicious, but this bush made it through the winter without much covering. But now it has spots of this
white powdery stuff...powdery mildew? I can't imagine actual mildew living in a windy environment. Perhaps
rose powdery mildew is a different kind of mildew. My wife has been treating it with Neem oil. Does that
sound right? I've read warnings about using it in sunny spots...how about sunny, windy spots? David
I couldn't take a picture outside because the windy had everything blowing around. So I clipped a sample.