In general, Heliconias are evergreen in the Tropics and warm Subtropics, like zone 10. Further north, upper zone 9 and lower zone 8, they may be frozen back to the ground each Winter but survive to resprout the next Spring.
The Dwarf Cavendish Banana makes a good container specimen if given careful attention. Banana plants are extremely decorative, ranking next to palm trees for the tropical feeling they lend to the landscape.