Winter-hardy banana plants such as the orinoco plant are varieties grown in the mountains of South America. These plants are able to withstand winter temperatures, to a degree. The bananas from these plants are smaller, yellow and tubular in shape. The bananas do not get the same ripe taste we're all used to with store-bought varieties, but growing your own winter-hardy bananas takes all those air miles out of the equation. Although the plant is winter-hardy, it does require some preparation.
Cut the stalks of the banana plant back to the soil at the end of the growing season to reduce the amount of energy the roots need to expend during the winter.
Water the soil so that the roots are covered with 1 or 2 inches of moisture. Winters have drought-like conditions, which will dry out the banana plant's roots. Do not over-water as banana plants are susceptible to root rot.
Place a thick layer of peat moss over the top of the banana plant soil.
Cover the peat moss with a sheet of thick plastic to retain moisture in the soil and prevent the soil and roots from chilling over the winter months.