A friend told me a long time ago that tomato blooms won't set fruit after it gets too hot. Seems like it's too hot. Mine have stopped setting fruit.
Anyone know about this for sure?
Yup. Baby them through summer if you're inclined and you may get a fall crop. Even if you get some flowers, the pollen is sterile when air temps reach about 90*.
It's called "blossom drop" and it occurs for a variety of reasons, not just heat. http://gardening.about.com/od/problemspest1/a/BlossomDrop.htm
For instance, I never thought about how humidity affects pollination. During these weeks of bone-dry air, I might have gotten a few more tomatoes if I'd sprayed the foliage as mentioned in this article.
I remember that my mother used something called blossom set to help set fruit. Lots of people swear by it and I suppose there's nothing to be lost by trying it. I do think our weather extremes make it less likely to work here than down South.
Here is a link that might be useful: Blossom set
I guess I will stop flicking the flowers, then!
Now to brave the worst of summer. Sigh.
Want some ice tea?
sheryl, i am glad you are back in town, you were always a great wealth of information