The flowers are typically red, orange, or yellow, or any combination of those colors. Pollen is shed on the style while still in the bud, and in the species and early hybrids, which means that they are self-pollinating.
Although plants of the tropics, most cultivars have been developed in temperate climates and are easy to grow in most countries of the world, as long as they receive at least 6–8 hours average sunlight during the summer, and are moved to a warm location for the winter. These flowering plants can live indoors and outdoors, and survive year round.
Canna or canna lily is the only genus of flowering plants in the family Cannaceae, consisting of 10 species. Cannas are not true lilies, but have been assigned by the APG II system of 2003 to the order Zingiberales in the monocot clade Commelinids, together with their closest relatives, the gingers, spiral gingers, bananas, arrowroots, heliconias, and birds of paradise.