powdery mildew?

powdery mildew?


So I bought yellow squash plants, against my better judgment, from a local flower shop with spotty plant quality rather than from the farmer's market this year. So far they've been growing well and outrageously productive, but a couple weeks of hot, humid, rainy weather have affected the plants. Now the lower leaves on the plants are yellowing and dying, and I'm trying to figure out whether they can be salvaged.

At the beginning of the summer I was concerned that these plants had powdery mildew, because there were light patches all around the veins of each leaf, but I am not sure what powdery mildew really looks like. Is that what you see in this photo? If that is actually the problem, please recommend the most foolproof organic antifungal treatment you know? Thanks...

reusing grocery bags

reusing grocery bags

The cactus that would (NOT) be dinner..and peas!

The cactus that would (NOT) be dinner..and peas!

pesky pole, please help!

pesky pole, please help!

Slugs? Or… something with teeth? Help me out here.

Slugs? Or… something with teeth? Help me out here.

Why am I awake at 2:45am?! :(

Why am I awake at 2:45am?! :(

ID Please

ID Please