Once established M. Basjoo does fine here with no help, just dies back and then spreads more next year...
They can be downright pesky, I think dynamite would be my choice of how to get them out once they take over...
If I were in zone 7/8 I'd choose a different banana, but for folks in the north it's a good reliable choice if you don't want to move them back and forth...
@tarev
Thanks for sharing, I'd love to see them like that!