Karl Bapst posted some info about that on this thread. I had wondered about that, too, as I have a horde of cuttings coming along this Fall. :-) Congrats on rooting your cuttings!

I am going to overwinter mine in an unheated cellar.

Happy Gardening,
Michelle

Here is a link that might be useful: Karl's post on overwintering

This is a very timely thread for me too, as i'm thinking about ordering a few more for Fall delivery. I'd rather have them right now, but, alas, no shipping right now from the vendors I need.

Last year I brought in my started cuttings and grew them on under lights in an unheated workroom--but central North Carolina temperatures are not like those in Belleville. This year I have far too many rose babies to bring inside, so I'll have to figure out something else.

Before moving here I was a member of the Belleville Area Rose Society--great folks and very helpful too. Six years later I still miss that group! Perhaps some of those Consulting Rosarians are still around and could help you.
Best Wishes and congratualtions on getting the cuttings going,
Laurel

I would leave them outside and let them go dormant, then sink the pots in the ground and cover them with some kind of winter protection. Others who garden more northerly than I do might know the best way to protect roses where you are.

I doubt the cuttings would do well indoors over the winter, unless in an unheated basement or garage. But I expect you will lose some some of them if they aren't sheltered in some way.

Donna