Beginner Gardening: Zucchini and squash help, 0 by Ray_Der_Phan

Ray_Der_Phan wrote:
It is definitely a pollination issue. You had one grow to a good size so you have pollinators. I wouldn't worry about a few shriveling up....it happens all the time. This year I'm happy to see half my squash yellowed and dead. I'm drowning in squash lol I only have 5 Zukes and 4 scallops. I've been giving them away and still have more than I can deal with. It did take about a month to get them in full swing. Just be patient.

I agree with what cyndiehook said.....

Quoting:Also, summer squash leaves get a weird white veining that looks weird, but is not anything that effects the plant. Not necessarily bad.
I would take my chances and stop spraying. If not, then you must hand pollinate as the bees that come to your plants will not live long enough to continue pollination.

I'm no expert by any means. Only have grow squash for 2 years. Last year was a bust because I had powdery mildew and sprayed them weekly if not more with Neem or Daconil. It discouraged or prevented(killed) the few pollinators I had flying around last year. This year, I'm not spraying and I have tons of bees! Yes, I see mildew this year but I'm being more hands on with it. Cutting off any leaves or stems that have it.... I am checking daily(or every other day). A little mildew(at least in my area) is impossible to prevent. You just have to make sure it doesn't spread all over the plant.

From my limited experience with squash. Bottom yellowing of leaves is normal(just like cukes). I remove at least 2-4 leaves weekly....they seem to like me hacking off their bad leaves. One other thing, whitish spots on leaves isn't a bad thing if it looks like the pic below(not powdery mildew). My Scallop squash doesn't have it but all of my Zucchini do.