'Black Coral' Elephant Ear has large, jet-black, heart-shaped leaves that droop downward from long stalks, forming upright clumps that could grow three to four feet tall and wide. Consistent watering and fertilizing during the growing season will produce the biggest, happiest specimen, and some sun (morning or all-day dappled sun) will intensify the black color. Grow in large container planters, in borders, or along the edge of ponds or water gardens.