Ma'o hau hele   Hibiscus brackenridgei subsp. brackenridgei
Ma'o hau hele is our state flower. It is an archaic Hibiscus that can grow to 10 feet tall. This plant needs full sun and has low water requirements.

see moisture zone map here
more info on ma'o hau hele   Hibiscus brackenridgei   
more info on ma'o hau hele   Hibiscus brackenridgei