Angie, your Begonia might enjoy a temporary summer vacation outside, either in the ground or in a pot if you would enjoy looking at & tending it that way, but you're right, won't be able to live through the cold of winter outside. Any Begonias not hardy to Z7 would not be hardy where you are. Probably me that left a wrong impression, and I apologize if so, and thanks for drawing my attention to it. Mine must also come inside to escape winter.
