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cold hardiness of gisela 6

Posted by windfall_rob vt4 (My Page) on
Tue, Feb 5, 13 at 8:28

Any one have any good info on the average cold hardiness of the gisela 6 rootstock?

I spent a little time this morning but couldn't come up with anything specific.


Follow-Up Postings:

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RE: cold hardiness of gisela 6

Gisela 5 and 6 are considered very hardy. I'm not sure they are zone 4 hardy but they are supposed to be hardier than Mazzard. No damage after -18 in WA. But that's not -20 to -30 of zone 4.


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RE: cold hardiness of gisela 6

With global warming, I'm not sure if Zone 4 exists at all anymore in the continental U.S. ;)

Seriously, though, Gisela rootstocks are hardy to at least Zone 5 if not Zone 4.


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RE: cold hardiness of gisela 6

That is quite helpful. If hardier than mazzard it should be OK for all but the most extreme of our test winters...they certainly seem to be less of a test than they used to.

Our loss of consistent snow coer actually has me more worried about rootstock hardiness than I used to with the occasional deep dip in temp....that wasn't so bad with 20+" on the ground. Whole different story with nothing but a dusting.


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RE: cold hardiness of gisela 6

Past couple of years I haven't been able to put my Gisela 5 fruit buds to the test...in 2009 (they were just very young trees then), we had -26F in Jan... they are still alive today.


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