Re: growing bananas in northern/central north carolina?
Oh yeah protection for your area. Mulch several inches around the base. You can make a hoop house for them after you wrapped them for added protection. Tarps from harbor freight are great to wrap the p-stem with. They will need to be atleast 4 ft to even survive the winter any smaller and will die off. You can also trim them to the ground leaving several inches of the stalk left and mulch over top of that.
I live in Wilmington one mile from the beach so all mine listed survive winters here.