Includes 4 Plants - Approx. 4 - 6 Inches – in a 2.5 Inch Container – No Bloom - Plant approx. 4 - 6 Inches. One of the most beautiful species of tropical flower that is absolutely gorgeous is the Bird of Paradise flower. They are actually called Strelitzia, formally, but grew into the Bird of Paradise name because of its resemblance to certain species of birds, called & birds of paradise. The vividly bright plumage and form of the bird resemble the shape and bloom of the flower, hence the name.