Grown primarily for their foliage, Caladium and Colocasia (elephant ears) give gardens and patios a lush, tropical look. Caladiums are known for their brightly colored foliage that is often intricately veined and even variegated. These plants are used to brighten shaded areas and can be planted in the garden or containers. Elephant Ear plants (Colocasia) can grow quite tall—sometimes 6 ft. or taller. Their leaves can reach up to 2 ft. across. They can be planted in the garden or very large containers. Both Caladiums and Colocasia are tender bulbs, meaning they don't like the cold weather. Wait to plant them until all chance of spring frost has passed.