I don't have a heated garage or greenhouse, am I better off going the route of diging up the corm, wrapping it in breathable material and put it in a corner, as described below?
Decide in fall whether to risk losing your Abyssinian Red Banana to winter frosts or whether to dig it up and overwinter it. To overwinter, dig your banana tree up with a spade, cutting through the roots about 6 inches from the stem. Remove all but the smallest leaves. Repot your banana tree in your greenhouse in a large plastic pot using multi-purpose compost and water sparingly. Keep your greenhouse at a minimum temperature of 39 degrees Fahrenheit throughout the winter.
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Overwinter your Abyssinian Red Banana in a garage or storeroom if you do not have a greenhouse. Cut off all the leaves, leaving about 5 feet of stem, and clean the roots. Leave the stem to dry for a day and them wrap in breathable packing material and store upright in a cool, dark place. Your chosen site must not get below freezing or the stump will be damaged. Check your banana tree regularly and move to a colder spot if you see any root or leaf growth before spring.
Read more: How to Care for the Red Abyssinian Banana | eHow.co.uk
How to Care for the Red Abyssinian Banana | eHow.co.uk