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.
A very beautiful, very interesting looking plant. Frilly, double, midnight-purple fluted horns or trumpet flowers, with white interiors burst open in profusion throughout the Summer.