red flame grapes.... hardy?
I have tried now three time to get a 'Red Flame' grape vine started from nursery plants ... one froze the first winter at minus 19 degrees, the second plant I bought bore the old Concord grapes on the vine ... took it back with the 'Red Flame' tag still attached to the plant (!) & got a replacement. The third purchase of Red Flame grew last year well but now this spring most of the vines appear brittle/dead! I live at 5200 ft. high desert & this past winter it got down to 19 degrees one night... is this grape being planted in too cold a zone for it to survive? They fig & pomegranates both will freeze back some winters but always grow back from the base again. I realize & understand the home grown Red Flame grapes will not get as big as the store bought ones as the commercial vineyards are able to treat them with something to make the grapes bigger! I have 50 + yr. old seed Concord vines that produce loads of fruit every year though a few years back we got minus 19 & the vines froze so the next leaves were deformed that year but never died & are still producing. I may have to give up though on the Red Flame here!