It is also reportedly naturalized in India, the Philippines, Mexico, Panama, Cuba, the Dominican Republic, Peru and southern Brazil.

Originally described by the early American explorer, William Bartram, when he found these plants blooming near the rivers of coastal Georgia.

[4] In the last three decades of the 20th century, Canna species have been categorised by two different taxonomists, Paulus Johannes Maria Maas from the Netherlands and Nobuyuki Tanaka from Japan.

In this case both agree that C. flaccida is a distinct species, and the DNA work by Prince and Kress at the Smithsonian Institution confirms its uniqueness.

[5][6] Canna flaccida is aquatic species, with narrow, blue-green (glaucous) leaves, very pretty, large, lightly perfumed, canary yellow flowers growing in clusters at the tops of long stalks.