Beginner Gardening: What is this mold/mildew on my cucumber plant?, 1 by montanadolphin

montanadolphin wrote:
Hi everyone. I started a garden this year, and I have one single cucumber plant that made it. But now, there is a rust/orange colored mold or mildew growing on the underside of the leaves. Could someone please help me identify the parasite and give me some ideas on how to salvage my lone cucumber plant? Thanks so much in advance.

I live in Richmond, Virginia if that helps any.

Also, if I touch the orange fungus, it comes off like a powder.

Becca