Ask a Question forum: Can seeds germinate in extreme weather, temperatures between 100-115 degrees.

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Arizona
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DesertGardens
Jul 27, 2017 4:49 PM CST
I plan on primarily planting corn, pumpkin and other seeds. However it is extremely hot where I live, so I was wondering if any seeds I plant would come up. I've grew corn before in hot weather but never actually planted the seeds when it was this hot. I plan on watering the seeds a lot of course and they have good soil. Any help is appreciated.
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jul 27, 2017 5:06 PM CST
Welcome!

I know corn germination is adversely affected by heat but I don't think pumpkins care.
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Name: Liz Shaw
Gilbert, AZ (Sunset Zone 13) (Zone 9a)
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LizDTM
Jul 27, 2017 10:03 PM CST
I planted corn last week in Phoenix and it all germinated and came up.

Then the dog ate it.

But it germinated!
And the day came when the risk to remain tight in a bud was more painful than the risk it took to blossom. -AnaΓ―s Nin
Arizona
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DesertGardens
Jul 27, 2017 11:55 PM CST
Ok thx for the help, I also have a shade I can use to keep the temperature down until the plants emerge.
Arizona
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DesertGardens
Aug 6, 2017 12:54 PM CST
Update:

I ended up planting corn, pumpkins, melons, cucumber, zucchini, beans, and peppers.

So far most of the pumpkins have sprouted after about 5 days, also the corn have started sprouting after only about 3 days since planting. The beans have also sprouted and melons even though the seeds were a few years old. I am still waiting on the others but I only recently planted them.

Overall I think I can confirm corn, pumpkins and most other vegetable seeds can germinate in high temperatures above 100 degrees. In fact the corn have sprouted much sooner than expected, and I expect all my other seeds to germinate successfully.
Name: Karen
NM (Zone 7b)
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plantmanager
Aug 6, 2017 1:01 PM CST
Good luck! A bit of shade and lots of water will be appreciated until this weather calms down to better temps. You must have a large area for planting!
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Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Aug 6, 2017 2:22 PM CST
Howdy there fellow desert friend. From S.J. Valley, CA 😁
Diligence !!!
To start seeds, this time of year.

Shade = Good. Just remove gradually. Thumbs up
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Anything i say, could be misrepresented, or wrong.

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