One of the factors perhaps is the size of the plant. My Musa rose was still young and small, only about 3 ft tall at the trunk when it was left out for mother nature. This was unreplicated, so not really a valid scientific study, just for my own curiosity. The pattern of winter could influence various responses. Our winters are generally gradually cooling in most years, that is why our citruses harden more than their published cold tolerances, and I am suspecting that this would not be true for our bananas here. Our winter would be miserable for bananas because it is the time when we receive most of our moisture in the form of cold rains that could easily rot away the corms in the ground, but I have placed plastic liners to keep them on the dry side which apparently did not help.
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