ekoboat

I just got what I was told was a dwarf cavendish, I plan to keep it under the house this winter. I've been thinking about trying to protect it the same way as the basjoo next winter. I guess I would have to figure out how long from pup to fruit and hope for a pup coming up near that time, so i could get it to fruit in July. I'm sure it's way too late in the year to try to plant the cavendish.
There were some leaves mixed in with the straw that started to decay, maybe that put off just enough heat to keep it growing through the winter. Does anyone think I could put some compost in small plastic bags and bury them in the straw? Would that help control the heat the compost gives off? What do you think?
Steve