Canna (S)
Hardy to Zone 7 with protection
Because Cannas are such bold subjects, thoughtful placement of them is required. Cannas are easy to grow and require full sun and moist, rich soil. In cooler zones start Cannas indoors in large pots, 6-8 weeks before the last expected frost. Lay the roots on their sides and press firmly into a mixture of soil and peat moss until they are just covered. Water lightly until growth starts. When nights become warm (10-15°C) transplant to the garden, covering the roots with 4-5" of soil. Space 1-2' apart. Feed monthly with a 5-10-5 fertilizer.
Remove old flower trusses as they fade. Cut the stalks to the ground after frost blackens them and store the roots frost-free in vermiculite or peat moss. If you grow cannas in tubs, move them to a frost-free place for winter and let dry.
