Calla lilies are arguably the most elegant of all blooms. Like a swan's neck, the thick stem of the calla lily hoists up the graceful flower's head, which consists of a single, white oblong-shaped petal that resembles a basin. The plant's leaves are large, waxy and arrow-shaped, and they can grow to nearly 2 feet below the flower.
The calla lily is indigenous to South Africa, where it's considered little more than a weed. Though the plant grows as a perennial in the tropical climate and ample humidity of its native land, it's considered an annual in much of the United States because of the lily's inability to withstand chilly winters.