Large-flowered trillium, also known as wood lily and wake robin, is a woodland plant native to the forests of North America, growing as far north as Quebec to as far south as Alabama and Georgia. A spring bloomer, it produces leaves, petals, and sepals, all in groups of three, which emerge from underground rhizomes on stems 8 to 18 inches tall. Each plant has a single white 2- to 3-inch flower that fades to pink as it matures, followed by white berries. Plant rhizomes 4 inches deep in moist, humusy, well-drained soil in partial to heavy shade, water regularly, and cover with leaf mulch in the fall, where it will spread slowly if undisturbed.