This is getting strange.
I wrote a week or so ago about how my butternut squash was starting out producing ONLY female flowers. No male flowers. See http://forums2.gardenweb.com/forums/load/cornucop/msg042105525679.html?12. We reconciled that as a new generation hybrid that pumps out female flowers first. OK, I accept that.
In an effort to keep the vine borers at bay (yes, butternut is "resistant", but not immune) I have them pretty well sealed in tulle. I had committed to manual fertilization once male flowers appeared, which I was confident that they hadn't.
Now I look at my supposedly lonely female flowers. The blossoms have dropped off and, aaack, there are squash there on three of them! See picture. Yep, real squash. That's just one of the three. Green, striped, and almost two inches long. On two of the female flowers, the unfertilized protosquashes, about half an inch long, are shrivelling up, just like I thought all of them would do. Hunnhhh? (Oh, you can barely see an unopened female flower in the picture, in the shadow just above the squash.)
So the situation is, butternut squash under tulle, with no male flowers, somehow getting fertilized. How?
Let's figure this out. Wind pollination from neighboring squash? I know of no one within a hundred yards that is growing squash. Actually, I don't know anyone on my street growing squash.
Maybe I missed a male flower, and there was wind pollination? I'm pretty sure not. I surveyed the situation carefully. I've grown these squash enough to know what the flowers look like. But this is the first time I've grown them under tulle.
Kinda spooky. I'll report back if these little squash decide not to keep growing. Wow. If I can put tulle over my squash and don't need to manually fertilize them, that would be pretty slick!