Re: attempt to breed cold hardy fruiting bananas
Have you considered Musa 'Helen's Hybrid'? From what I read, it's thought to have originated from a cross between M. sikkimensis and Musa 'Chini Champa'; potentially having cold hardiness from sikkimensis genes, and better edibility from the 'Chini Champa' genes.
@sirdoofus is growing it on Vancouver Island and may be able to attest to its hardiness potential.
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