Bare with me for a 2nd, as I'm not from a cold climate. If the rose were grafted, and you planted the graft 6 inches below ground, is it possible that this rose could survive in that colder climate? Maybe even with some mulched hay or wood chips or soil piled up around it for the winter? Or what about own root. Can own root roses survive in climates where normally grafted ones would die, and you would only end up with the root stock coming up and blooming? As I said, not from cold climate, but it might be worth a try. Well, actually I am from a cold climate, Durango, Colorado, but when I lived there gardening was the last thing on my mind. Very young :)
Alan
