By Mary H. Dyer, Master Naturalist and Master Gardener Native to the desert climates of the Arabian Peninsula and South Africa, pig’s ear succulent plant (Cotyledon orbiculata) is a hardy succulent with fleshy, oval, red-rimmed leaves that resemble a pig’s ear. Bell-shaped orange, yellow or red blooms grow atop tall, 24-inch stems in late summer or early autumn. Pig’s ear plant may reach heights of 4 feet at maturity. Keep reading for tips on growing pig’s ear plants and their subsequent care. Growing Pig’s Ear Plants Often known simply as a cotyledon pig’s ear plant, it is well suited for nearly any dry area of the garden, including rock gardens, succulent beds, hanging baskets or window boxes. Pig’s ear succulent plant is suitable for growing in USDA plant hardiness zones 9b through 12. If you live in a cool climate north of zone 9, cotyledon plant does just fine indoors.