actinidia arguta issai 'Kiwi' hardiness?

I have been a huge fan of the delicious hardy kiwi vine for some time once trying the incredibly sweet fruit it made me want to grow them ...unfortunately the kiwi may grow to big for my space that i have allotted until i discovered the issai kiwi the self fertile arguta kiwi. my only concern is how hardy this vine may be is there anyone in northen ontario zone 4 growing these delicious kiwi fruit specifically this variety where i live is apparaently suited for arguta kiwi zone 4b where weather may dip into -34 celcius with -40 windchills... i have seen multiple nurseries sell these as well despite the fact that i have searched with results varying from its hardiness beginning anywhere from zone 3 to 6. anyone with info regarding growing it in zone 4 or colder not kolomitka but arguta would be awesome.

I don't have any experience growing them though this article says Zone 3 to 8

http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=243359

This is something to put on my wish list.

Hi Jordan,

The Actinidia Arguta Issai kiwi variety in which your refering is said to be native to areas of North China and even Siberia according to numerous sources. I think its fair to assess its USDA hardiness zones as recomended between zones 3 and 8. Because hardiness zones are determined by minimum winter temperatures, cooler areas of zone 9 that don't get to hot in summers, like the northern coastal areas on the West Coast, may also be applicable.

Hope that helps!