Diamond Head is a spectacular variety of Taro is named after the volcanic cone on the Hawaiian island of Oahu, which makes sense because both the cone and plant are black and lustrous! A stunning new addition to the world of elephant ears, Diamond Head's broad, lightly ruffled-edged, chocolate-black leaves have a shiny surface and a lustrous sheen that reflects the light. For best color, grow it in full sun. Mature plants form a well-behaved clump and reach 3 to 4 feet tall, with leaves up to 2 feet wide!