Canna durban is a tall variety of canna lily plants and a member of the Cannaceae family that consists of 55 species. Canna durban is a flourishing tropical perennial grown from rhizomes that produces large prominent leaves and bright red blossoms from summer until frost. Growing to heights over 5 feet with spreads near 2 feet, canna durban grows best in USDA hardiness zones 8 to 11. Plant canna durban rhizomes after the chance of frost has passed.
Plant the canna durbans in locations providing moist soil and full sun to partial shade. Allow enough room to space the rhizomes 18 inches apart.
Cultivate the planting area to a depth of 12 inches. Mix in a 2- to 4-inch layer of compost to enrich the soil.
Dig a hole with a hand trowel 4 to 6 inches deep. Place a canna durban rhizome in the hole horizontally.
Cover the planted rhizomes with soil and saturate with water. Continue to supply 1 inch of water weekly to the cannas throughout the growing season, if rainfall is less.
Add a 2- to 4-inch layer of mulch around the planted canna durbans to deter weeds and preserve moisture.
Apply a balanced fertilizer as directed on a monthly schedule through the summer season.