overwintering a few plants
I'm new to overwintering plants and really in need of some advice. I have some elephant ears. Alocasia, and Colocasia. I see the typical green Colocasia year after year, so I know it's somewhat hardy here. I also have a couple diffrent ones like black magic, nancy's revenge, and rhubarb. I'm pretty sure these are only marginaly hardy here, if at all. So I would like to leave some in the ground, and keep some overwintered just in case. I already have some started in containers. I'm pretty sure they will go dormant in the house, so should I keep them under my house? Should they be kept moist?
I also have alocasia porto dora, and ?macrohizza?. Will these make it as "houseplants" through the winter. I also have some Hedichium ginger that I would like to continue growing this winter. Any help would be greatly appreciated. Thanks