Certified GKH Gardening Expert
They will fare best if brought inside to a location that stays around 40 degrees F, such as a basement. Water lightly about once a month. Although they are generally hardy to USDA zones 5 or 6, the fact that they are in pots will leave them vulnerable to freezing.
If they are in small containers, you can bury them in the ground, pots and all, up to the top of the container.