Powdery Mildew on Cucumbers: Picture

Powdery mildew often hits cucumbers, zukes and squash. These cucumber leaves (below) look like they have a white powdery dusting on their leaves. That is powdery mildew. As soon as you see it on one leaf it is time to treat the whole plant.

There are lots of treatments. I use wettable sulfur. It creates an environment on the leaves the mildew doesn't like. This year I had 2 small outbreaks of powdery mildew. A quick spray cured the plants. This is the first year I didn't have a large epidemic.