You can try to get Musa Itinerans. The hardiness info on this type is sketchy, but its worth a try. The seeds germinate really, easily.benboo wrote:Are there any other Bananas worth pushing to climate zone 6?
Musa "Helens Hybrid" is said to be hardy to zone 7, and is edible.
Musa Sikkimensis (sp) has been split from the "darjeerling giant" name as far as I can find, so maybe getting one of each. Sikkimesis is the best documented other "hardy" banana ive seen.
Musa yunnanensis is said to be as hardy as M siikkimensis, but again, information is sketchy.
These are all ive been able to find, as far as "hardy" banana species (aside from the aformentioned Musella). You might have a chance with some of then in zone 6 in a southern wall under deep multch...