I have noticed Musa sikkimensis
seems to have the hardiest leaves to cold here. All other bananas (species and hybrids) have their foliage freeze right at 32-33F, even M. basjoo
. But M. sikkimensis
seems to take a couple degrees colder before getting damaged. And when it does get damage it is always the first to grow back. From experience here. it always has 3-4 leaves grown back when other bananas are at 1-2 leaves.
We have been down to 29F 3 times this winter and below 32F 6 times. This clump still has green foliage while the others are browned out. Now the location these are growing are in a warmer protected location it still has been about 31-32F there and there are other bananas nearby with dead foliage.