Commonly known as Dog Tooth Violets, they derive their name from their unusually shaped bulbs, which indeed, resembles a dog's tooth. Perhaps they are one of the most rewarding of all spring bulbs, as not only are their graceful blooms spectacular, the array of differing foliage types makes an all round attractive plant. Partial shade and moist, well drained soils provide best results with the yellow varieties proving the easiest to grow.