Answer: Your zip code places you in zone 6. In my experience, this is too cold for a rose tree to survive the winter outdoors. The high graft will be damaged by the cold weather. Instead, I would suggest bringing it into a sheltered cool location such as a garage. Wait until late fall to bring it inside, and take it back out in early spring, once the worst of the winter is past. While it is indoors, water just enough to keep the soil from drying out completely. This way it will rest until spring. Alternatively you could bury it sideways in a trench and top that with a deep layer of mulch. Bury it in late fall and dig it up in early spring so it can wake up naturally with the season. I'm sorry this may not be what you were expecting. Good luck with your rose tree!
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