Gardening with voodoo lilies is a unique experience, in part because of the lilies' calla-shaped flowers that fade back before the plant sprouts tall, speckled stalks. Each bulb produces one stalk, topped by a spathe and spadix flower that looks like a calla lily -- you can expect the spathe of the flower to be up to ten inches long. Once the flower has blossomed and dies back, the voodoo lily's "tree" will grow, reaching up to 48 inches tall!