Vine borers usually get the vine not the leaves. So the borer may still be a
problem. Sometimes the hole and frass are on the underside of the vine and
hard to see. Are any leaves wilting? Where do you live? I've noticed that of
all th squash we grow, acorn flowers seem to be the most temp sensitive.
Have you had a hot or cold spell lately? A few more possibilities.
Gary

"Landrey" wrote in message
reenews.net...
(Pat Kiewicz) wrote in
:

Landrey said:

I am growing acorn squash and I have noticed that the vast majority of
the female flowers will fall off long before they ever bloom. I have no
shortage of male flowers and thankfully I have successfully pollinated
the few female flowers that have actually bloomed. Any advice as to
what the problem could be?

*Falling* off?

Does just the flower part come off, and are there any marks on the baby
squash behind it?

I ask because quite often I have problems with the first female squash
blossoms being attacked by idiot fledgling startlings. Maybe they think
there little squashes are bugs. Maybe they are just drunk on over-ripe
fruit. (They also sometimes bite at tiny baby peppers and eggplant
fruits, but here the triangular bird nips are more obvious.)

Or do the flower and baby squash turn yellow and drop? This would
indicate that the plant was aborting the blossoms for physiological
reasons (pest load, nutrient problems, too much shade, water stress).
Usually I see this sort of blossom dropping later in the season on
plants that already have a heavy fruit load.

Yeah, the flower and fruit turn yellow and fall off. I cut off some leaves
that had been invaded by vine borers so maybe that's why.