BillHey #gardening. I have this white powder all over my zucchini leaves. I thought it was Canadian wildfire smoke leavings. My car is covered in that. But this is getting worse and we've had no more rain. Has anyone seen anything like it?
lobelia@Sempf Hi! From the picture, it looks like a bad case of powdery mildew (I’m no expert though). In my experience zucchini are very susceptible to it. It’s very common, and probably easy to find info about it.