Canna cannova - Canna Lilies Growing Canna lilies in your garden is an easy way to create instant flamboyant tropical flair. Striking and vibrant large showy flowers in a dazzling array of colours are borne on tall stalks poking out of the large paddle-like leaves that come in a range of greens, blue-greens and bronzes or variegated/striped patterns. Watching canna leaves shoot up and then unfurl over a few days is an impressive sight. Canna flowers come in shades and combinations of yellow, orange, red and pink. These dwarf - medium cannas grow up to 1metre tall and flower from early summer right through to autumn