Banana plants (Musa spp.) Are tropical herbs which do not do well in cold climates. They can be increased in U.S. Department of Agriculture plant hardiness zones 9b through 11, in which it seldom freezes. Sub-freezing temperatures can cause the banana plant to die back to the ground, but before you take out your saw to remove the dead material, you need to evaluate the situation prior to making a fatal error for your banana plant.
Analyze the leaves and pseudostem of the antioxidant plant after a freeze. If they are brown and wilted, you should remove them when the weather allows.
Look at your weather forecast to the next two weeks. Leave the damaged part of the banana plant in place if there’s a prospect of more freezing weather.
Saw the banana plant down to the ground after the icy weather is finished.
Cover the cut portion of the banana plant with a thick layer of mulch to protect it from the cold for the remainder of the winter. At the spring, the banana will regrow from the rhizome when the soil warms.