What is your zone?

Chenocurl in Indiana posted this:

I had better luck one year, just leaving the rhizomes in a box on the carport over the winter...I didn't really mean to do, that. It just happened. They shriveled up a good bit, but were still OK in the spring for planting and survived. They didn't bloom the first year, but the main thing was that they survived and didn't totally dry up or rot.

I`m in the northern part of zone 4 Some say we are zone 3.

I've kept them as houseplants with surprising success. I'd do that again before trying to store the rhizomes dry.

Just pot them up at the proper level, and put them in a sunny windowsill.

I would put them in pots and in the house, I have over a hundred of them and that is way to many to pot and keep in the house. thank you.

If you have a cellar I would store them in paper bags there or a garage - someplace cool but protected. An unheated room in the house?