Author Topic: These survived -10 F  (Read 719 times)

Vlad

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These survived -10 F
« on: July 24, 2023, 03:32:40 PM »
Last winter, we had a day when it got down to -10 F and these two in ground trees survived without any damage and with no protection.
The pic below is a 5 ft tall flying dragon:



I took a sucker of a trifoliate rootstock (do not know what it is) and rooted it years ago. It is now at least 6 ft tall and this what it looks like now:




poncirsguy

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Re: These survived -10 F
« Reply #1 on: July 24, 2023, 10:38:09 PM »
Poncirus trifoliata and Flying dragon can both go down to -25F and survive.

Ilya11

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Re: These survived -10 F
« Reply #2 on: July 25, 2023, 01:55:53 AM »
Poncirus trifoliata and Flying dragon can both go down to -25F and survive.
No way, even -25C (-13F) is at the limit of its resistance.
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poncirsguy

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Re: These survived -10 F
« Reply #3 on: July 25, 2023, 07:50:23 AM »
My potted PT went down to -12F with no problems and it was out in the open.   it can go a good bit colder.

Ilya11

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Re: These survived -10 F
« Reply #4 on: July 25, 2023, 10:09:45 AM »
With sufficient protection you can probably cultivate mango at your place.
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bussone

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Re: These survived -10 F
« Reply #5 on: July 25, 2023, 11:01:41 AM »
Poncirus trifoliata and Flying dragon can both go down to -25F and survive.
No way, even -25C (-13F) is at the limit of its resistance.

You are severely pushing your luck and you probably need a friendly microclimate, but there's a poncirus documented in SE Michigan in a town that has gotten to -18 to -22F in recent years.

But if it's living in an eastern US zone 6, -10F to -20F is not out of the question. Never lasts long, but it happens occasionally.

kumin

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Re: These survived -10 F
« Reply #6 on: July 25, 2023, 12:44:19 PM »
I find late season growth quite vulnerable. Spring growth has a chance to lignify better and survives much better.