I'd think it would be fine there, especially if planted in a well-draining site and properly mulched. The only thing that would concern me is the planting time. Because it's marginally hardy, it would have a better chance if planted in spring and allowed to become established before facing winter. Some gardeners here in Knoxville have managed to overwinter these outside in the ground, but I think they were planted in mid spring.

I DO NOT recommend these in the ground. I have several in pots - I am in Columbus,GA. Bring them into a garage, green house or somewhere out of the cold for winter. Water them only when dry. Give them Miracle gro when you water and they will bloom. Mine are pale peach.