The genus Musa are cold hardy banana plants that grow well and over winter up. Most specimens attain heights of 12 to 18 feet. The hardy banana tree is actually an herbaceous perennial (the world’s largest) despite being referred to as a tree.
Musa basjoo is the largest variety and the most cold hardy. Banana trees winter care is simple. Hardy banana trees grow rapidly, as much as 12 feet with 6-inch leaves in one season. Once the first frost hits, the hardy banana will die back to the ground. To over winter your hardy banana, prior to first frost, cut back stems and leaves, leaving 8-10 inches above ground.