Tomato blooms vs heat

ernie85017June 4, 2012

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?

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MaryMcP Zone 8b - Phx AZ

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*.

    Bookmark   June 5, 2012 at 1:00AM
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tomatofreak(Z9 Phx USA)

It's called "blossom drop" and it occurs for a variety of reasons, not just heat.

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

    Bookmark   June 5, 2012 at 11:53AM
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I guess I will stop flicking the flowers, then!
Now to brave the worst of summer. Sigh.

    Bookmark   June 5, 2012 at 5:31PM
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Pagancat(Phoenix, AZ)

Want some ice tea?

    Bookmark   June 5, 2012 at 8:36PM
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sheryl, i am glad you are back in town, you were always a great wealth of information

    Bookmark   June 6, 2012 at 10:38PM
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