The tiger canna is named for its tall orange bloom with green and yellow striped foliage. The plant grows 5-6 feet tall with large oval leaves. Its striking foliage and blooms makes it a popular accent indoors or out. Tiger cannas enjoy a wet environment and are popular around water features and wetlands. Plant tiger cannas indoors in large pots or outdoors in the spring.
Choose a sunny location with adequate moisture. Tiger cannas like consistently moist, even wet soil. Areas of wetlands or marsh are ideal. Tiger cannas are attractive around water features and ponds.
Dig 4- to 5-inch deep hole. Place the rhizome horizontally in the center of the hole with the eyes facing up. Cover the rhizome with soil and tamp the soil firm.
Plant additional rhizomes 18 to 24 inches apart. Tiger cannas are spectacular when planted in large groupings forming masses of foliage and blooms.
Water the rhizomes immediately. Keep the soil moist throughout the growing season. Add a layer of organic mulch over the area to conserve water and discourage weeds.
Fertilize monthly with a 5-10-5 formula through the growing season.
Remove dead and dying flowers to encourage new blooms. When all flowers are gone, remove the entire flowering stem at the ground level.
Dig up the rhizomes in the fall in cold climates. Tiger cannas are hardy for Zones 7 to 11, although they do best in zones 8 to 10. In colder areas they must be dug up in the fall and replanted in the spring.
Divide the rhizomes every two to three years in areas where they winter in the ground. In the spring, after all danger of frost is past, remove the entire clump and shake off the soil. Break the clump into pieces, leaving at least three eyes per section. The rhizome will tend to break naturally into appropriately sized pieces. Replant the pieces 18 to 24 inches apart.