Aquatic canna is a perennial herb with a plant height of1~ 2 m; Leaf blade long lanceolate, blue-green; Racemes are terminal and flower-shaped; Petalization of stamens; The flower diameter is large, about10 cm; ; Flowers are yellow, red or pink; The flowering period in temperate regions is from April to 10, and it blooms all year round in tropical and subtropical regions. In temperate regions, the aboveground parts die in winter, and the roots go into dormancy. In tropical and subtropical regions, it is evergreen all year round.

The biggest difference between aquatic canna and other species of Canna in morphology and biological characteristics is that its rhizome is small, its internodes are prolonged, it is resistant to flooding and can grow normally in water with a depth of 20 cm.

Aquatic canna has lush foliage, rich colors and long flowering period. It is suitable for natural planting in large wetlands and can also be decorated in pools. It is also a flower plant with beautiful flowers and leaves in the courtyard, and can be used as a cut flower material. It is also a good material for air purification, and has certain resistance and absorption ability to harmful gases such as sulfur, chlorine, fluorine and mercury.