Winterizing using the Chicken Wire Method
After the first good frost when the leaves turn brown , cut your banana tree down to 2-3 feet (60-90 cm). Dispose of the leaves on the compost pile. Place 4 stakes about 3 ft apart in a square pattern, leaving the banana stump in the center. Place 1 to 2″ chicken wire or fencing wire around the posts forming a 3ft x 3ft square basket. Place a small plastic bag over the stump of the banana to prevent water getting in. The chicken wire should be about 3 to 4 ft high. Fill this basket now with leaves until full. The banana tree is protected from the hard winter frosts but is still able to breathe properly on those nice sunny winter days.
Early March is a great time to remove the leaves basket. .