Bulbs and bulblike plants
Bloom in early spring; need 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 a shady, woodsy site. Left undisturbed, plants will gradually increase by rhizomes. Dies to the ground in mid- to late summer. Specialists in native plants offer many species.Trillium ovatum
Western native. Resembles T. grandiflorum but has narrower petals; flowers are usually upright and are borne on stalks.
From coastal northern Europe; naturalized on the Oregon coast. Grows to 2 ft. tall and wide; blue-gree...
Native to Europe, western Asia. Slow growing to 70 ft., but seldom over 30 ft. tall and wide in cultiv...
Native to California. Robust plant with solid green leaves and 12–15-in.-tall stems. Golden yell...