Welcome Bob: I had two Clematis in pots this year which I never got to plant out. One is in my basement, one in the unheated greenhouse. They are extremely hardy plants, but If you are just receiving yours now, they may be very small. If such is the case, I would bring them all inside for the winter and plant them out in the spring. Put them in a patio door window or a basement, just don't let them dry out completely through the winter, don't overwater either. Have overwintered many Clematis in my cool basement, before planting out. Should be no problem. Cheers!