You’re wet enough for mildew? That’s impressive.
Powdery mildew is the least of the problems I’ve had with my squash but I found this online and it sounds cheap enough to be worth a try. Let me know how it works.
My issue has been squash beetles, cucumber beetles and worst, squash vine borers.
I am seriously considering taking a zucchini holiday next year to not provide the bugs anything to live on and hope they move on or die off.
I’m killing what I can as I see them but it seems like a losing battle.
No, but the last rain did it, and contrary to all the "rules," due to limited space, my approx. 40 plants along the West side of the building are somewhat close together, and most only get about 4- 5 hours of sun, but have going well, and so they are now very crowded. But little problem with bugs so far. Hope to get a neighbor to take a picture of the plot.
I read different formulas for spray, and so i wondered what you found. So i made my own yesterday, using about green tea, baking soda, some milk, a little pure-Castile liquid soap, and some hydrogen peroxide. After one day it seems to be helping, but some rain is forecast for tonight.