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...

Farmers Market

Farmers Market

Gift tags…

Gift tags…

Autumn Toadstools

Autumn Toadstools

Kiss my pumpkins, Pumpkin Pervert!

Kiss my pumpkins, Pumpkin Pervert!

love this community!

love this community!

Everything’s growing nicely

Everything’s growing nicely