With its bright pink blooms, sunburst dwarf canna is bound to give the landscape the atmosphere of a tropical island. Sunburst dwarf canna is a sturdy plant that will thrive in rough conditions, including blazing hot sun. The foliage is nearly as distinctive as the blooms, with dark red stripes accented with bronze, yellow and pink that will endure from early summer to the first frost. Although cannas can grow to heights of 3 to 6 feet, sunburst dwarf canna will top out at about 2 feet tall. Plant canna rhizomes in mid-spring after all danger of frost has passed.
Plant sunburst dwarf cannas in well-drained soil that has been cultivated and improved by the addition of 2 to 3 inches of peat moss, compost or manure. Plant dwarf cannas 4 to 6 inches deep with 12 inches between each rhizome.
Water the cannas immediately after planting, saturating the soil. After that time, water the plants deeply once every week during warm, dry weather.
Fertilize the plants in spring and again in mid-summer, using a balanced fertilizer such as 10-10-10.
Cut canna blooms for flower arrangements as often as desired. Keep spent blooms trimmed, as allowing the blooms to remain on the plant will cause the plant to produce fewer blooms.
Allow the foliage to remain on the plant when the canna is finished blooming for the season, as the foliage absorbs energy that feeds the rhizomes for next year's growth. When the foliage wilts and turns yellow, it can safely be removed.
Dig the rhizomes with a garden fork or spade after the first freeze if you live in a cold climate, USDA zone 6 or below. Spread the rhizomes in a cool, dry area to dry for five or six days. Place the rhizomes in paper bags or in cardboard boxes filled with peat moss. Sprinkle the peat moss with water, and keep the peat moss slightly damp throughout the winter. Store the rhizomes in a cool, frost-free room.