The distinctive bird of paradise (Strelitzia reginae or Strelizia nicolai) is one of the best known of all the tropical flowers and is a cousin to the banana. Surprisingly, the bird of paradise is easier to grow than many tropical plants and makes for a vigorous, rapidly growing indoor plant. It can be moved outside in the summer, and in warmer climes, it thrives for half the year outside. Bird of paradise typically flowers in the late winter or early spring, but under optimal conditions, it flowers at other times.