Yes, cold and dry would be good, as long as it's above freezing. Cold and damp = rot. Would some kind of riser help, to keep the pots off of the ground? My basement was damp, and wet in places, but dormant bulbs like Colocasia, Canna, and Gladiolus did well down there, as long as they didn't get wet. I used some plastic shelves for some, some cinder blocks.
