Cannas are bold, tropical perennials producing large paddle-shaped leaves and vivid flowers in red, yellow, orange, or striped forms over summer and autumn. One of the most dramatic warm-season flowering plants for Perth gardens. Full sun. Rich, moisture-retentive soil. Water generously through summer. Feed regularly. Cut spent flower stems to the base to encourage continuous flowering. Scarlet produces vivid scarlet-red flowers against lush green foliage - the classic Canna colour in a reliable, vigorous form.