Picking up a fresh fallen blossom is good for a refreshing whiff anytme. This is the official tree of Honolulu. Walking under a sunlit tree in full bloom is mind-blowing. Big orange hibiscus are usually hybrids. Too bad they don't last long as cut flowers.
Red hibiscus are a spectacular and common yard bush.
Ruellias came here from Brazil and are not all that common. Found this on at the Tropical Plantation. Fragrant sprays of red, pink and white flowers grown as an ornamental everywhere. Their fragrance at night is wonderful. Ti grows everywhere.