Commented: musa sikkimensis in planter boxThat's a good idea rigid isulation. The roots go a couple feet down in loose soil, not to mention the corms which can get big on sikkimensis, probably 12" below soil. It's gonna be pressed for sp...
Commented: Can you identify this banana plantIt looks more like an edible type to me, if your not worried about getting fruit check out one of the Musa sikkimensis hybrids, like Musa daj giant.