No, we are not bananas and yes this magnificent plant is hardy. This gorgeous chunk of monstrousness can eventually grow to 6m in height with leaves the size of surfboards. During the summer on mature plants an unusual and very large droopy flower spike appears followed by yellowish green inedible fruit. The main stem will die back after flowering but there will already be plenty of semi mature side shoots to take its place. If the plant gets too big for you just chop the trunk down to whatever height you want it and watch it start all over again.
Trunk hardy down to -4 centigrade and root hardy down to -10 centigrade.
Sent as a young plant in a 9cm pot. May be cut back for shipping. Sent as dormant plants in winter.
Additional photo by By Materialscientist - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11802987,By Stephencdicks