Elephant ear bulbs are among the most eye catching of the bulbs available for purchase. Not only are they one of the largest flowering bulbs, they are also very versatile in that they can grow with little sunlight to full shade. Beautiful on their own or planted as a back drop for your favorite blooms, they provide a bold Tropical effect in nearly any garden. Once established, they require little to no attention. They are grown for their foliage, which is reminiscent of an elephant's ear. What makes Colocasia (Elephant ear) black stem so unique is its tall, blackish stems, which create elegance and mystery in the garden. Cream to tan blooms. Botanical known as Alocasia rhizomes "black stem'.