Canna lilies are perennials that add structure and glorious depth of colour to your borders and containers, making your summer richer. The Canna genus comes in rich tones of red, orange, yellow and pink, contrasted with upright foliage of green, burgundy or chocolate brown. Flowering from June to October, what's not to like? Plant rhizomes in March/April in pots with a covering of compost, keep in a warm place, watered, plant out in borders or containers in late May after hardening off. Divide Canna rhizomes in spring to propogate, the gift that keeps giving.