BC I ordered some Nelson blackberries from Fedco . Should survive zone 3 . 5 plugs or tissue culture starts . Some will go to the lake . Said to have been grown for about 100 years by the Nelson family in Maine I think . So my black raspberries survived last years winter at the lake . Niwot had winter damage to the snowline . Jewel and Mac black some tip damage . Good for zone 5 rated to do good in -40 to - 50 . So zone 2 lows . They are selling Pequat blackberries and Pequat black raspberries . Bred by a guy in Pequat lakes . Many things have not been tested that far north . I will test some myself . We got to -27 last year so zone 4 lo