There is a wealth of information in old forum entries concerning the many techniques members use to over winter bananas. It's not quite as easy as just digging them up and putting them in a warm spot. The usual idea is to induce and maintain dormancy (minimal warmth, light and moisture) while keeping the corms and stems from rotting. There is a lot of variation to what works, depending on your local zone and temperature/moisture conditions. Do a little reading on the site and you'll find what works in areas similar to yours. Good luck in your efforts.
