Trillium, Wake robin
Bulbs and bulblike plants
Blooms in early spring; needs some winter chill. Each stem is topped with a whorl of three leaves; a single three-petaled flower appears in the center of the whorl (sometimes on a stalk, sometimes virtually stalkless). Plant in shady, woodsy site. Left undisturbed, plants will gradually increase by rhizomes. Dies to ground in mid- to late summer.Trillium ovatum
Western native. Resembles T. grandiflorum but has narrower petals; flowers are usually upright and are borne on stalks.
Tough, wiry, grasslike leaves grow from deep, fibrous roots to form clumps 2–3 ft. tall and wide...
Native to damp places in the Rocky Mountains and the Blue Mountains of Oregon. Grows to 3 ft. high and...
Native to California. Robust plant with solid green leaves and 12–15-in.-tall stems. Golden yell...