This Thalia is also known as alligator-flag. Aquatic plant, hardy canna. Can be grown in containers or in a pond, but they will spread. Potted Thalia can be moved into deeper water if in a container for over wintering. Grow 2’ to 6’, spread is 24”. Full sun to partial shade. Will produce a violet to purple flower. The leaves look as though they have been dusted with powder.