Raymond

A quick question about wintering elephant ears over the winter.
I live in Missouri and am really getting into the tropical look in my yard,so far i have 6 different types of banana's, 3 different elephant ears and two typs of hardy palms and am always looking for new hardy varieties of all......sorry now for the question of over wintering the elephant ears. In the past I was only working with what I call the "common" elephant ear that you can get at walmart in the spring and in the fall i dig them up remove all soil,roots, leaves let them dry then put in a containner......will this method work ok for all varieties? or should i do swomething different because I tried this with the black variety twice with no luck.