I can give you a good idea of how cold-hardy the corms are after this winter! I am unintentionally testing three mats of Ice Cream in the ground by intentionally not digging them up this year, lol. For the past couple of years, I have tried to overwinter the pseudostem under the house, but each year the center leaf always rots out on me. So I get pups sprouting from the corm every spring, which doesn't help me get fruit! I got tired of them being so darn unproductive that I just decided to let them all die. I couldn't imagine doing that to a banana just a few years ago, but I find it much easier to throw excess corms away these days. So anyhow, I'll give a full report in the spring!