With large leaves, and spectacular iris-like blooms appearing at the top of the stalks, Cannas are easily identified. They are heavy feeders and grow quickly in hot weather, providing a tropical feel. Cannas are long-blooming, long-lived, and not usually bothered by insects or disease. They attract hummingbirds and grow well in sunny, boggy areas. Cannas may take their own sweet time to emerge in the spring, so be patient (all the while knowing they are worth the wait). In most areas you'll need to dig up the tubers in the fall, after frost kills back the foliage, and store them in a cool, dark, frost-free place.