Erythronium - variously called Dog's Tooth Violet and Trout Lily are just perfect for dappled shade or woodland use. It gets the nickname Dog's Tooth Violet from the shape of the long pointed canine-like bulbs. There are several types generally available for the gardener, with a wide selection with the specialist bulb seller. Not too often seen in gardens, they should not be considered as being rare or hard to grow.
Planted beneath some overhanging deciduous shrubs or at the base of a large tree - such as an Oak - they will never fail to please in late march for a few weeks, and thereafter with some interesting light green foliage. The bulb plants soon forma clump, and will also be good groundcover, for they have good foliage at the early part of the year - smothering new weed seedlings before they get a chance to establish.