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 chloropetalum
Native to California. Grows to 1–1 1/2 ft. tall and 1 ft. wide, with 6-in.-long leaves mottled in maroon. Stalkless flowers have greenish white to yellowish petals about 2 1/2 in. long. T. c. giganteum has deep maroon petals.Trillium grandiflorum
Native to the eastern United States. Grows to 1 1/2 ft. tall and 1 ft. wide, with stout stems and 2 1/2– 6-in.-long leaves. Nearly stalkless flowers are nodding, to 3 in. across, white aging to rose. There are several choice double-flowered forms.Trillium ovatum
Western native. Resembles T. grandiflorum but has narrower petals; flowers are usually upright and are borne on stalks.
Perennial. Initially to 3 ft. tall and 2 ft. wide; after a few years, spreads by rhizomes to form a la...
Western native. Resembles T. grandiflorum but has narrower petals; flowers are usually uprigh...
Slow-growing, rather formal-looking eastern Australian plant with a conical, dense crown. Grows to 10 ...