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Trillium ovatum
Also called White Trillium, Western Trillium, Coast Trillium, Coast Wakerobin, Pacific Wakerobin, Western White Trillium, Western White Wakerobin
Pacific trillium is a native woodland perennial of western North America that spreads slowly from underground rhizomes and bears a white three-petalled flower that fades to pink. It needs cool, shady, moist conditions, similar to its native forest-floor habitat.
Trillium ovatum, commonly known as the Pacific trillium, western wakerobin, western white trillium, or western trillium, is a species of flowering plant in the family Melanthiaceae. It is the most widespread and abundant trillium in western North America. Its type specimen was gathered by Meriwether Lewis during the return trip of the Lewis and Clark Expedition in 1806.
Trillium ovatum sensu lato is the most widespread and abundant trillium in western North America. It ranges from Monterey County in central California northward throughout the California Coast Ranges to Vancouver Island and southwestern British Columbia. It also occurs in the Rocky Mountains from southeastern British Columbia and the tip of southwestern Alberta, southward through Idaho, eastern Washington and northeastern Oregon, and southeastward through western Montana. There is a small, isolated population in northern Colorado and southern Wyoming. It is often found growing in coniferous and mixed coniferous-deciduous forests, in and around alder thickets and shrubs. Along the California coast, it is commonly found under coast redwood and mixed evergreen forest. At Lolo Pass, Montana, it grows under spruce and Douglas fir in ravines along mountain streams. It does not grow in the dry chaparral inland from the redwood and Douglas fir forests of California and Oregon, nor on ridges where the trees are sparse.
Trillium ovatum is occasionally cultivated outside its native range as far north as Sitka, Alaska. As a cultivated plant, it usually does not perform well since it lacks the winter hardiness of other garden plants.
Giant white wakerobin · Giant wakerobin · Red trillium · White trillium · Yellow wakerobin · Snow trillium · Sweet wakerobin · Toadshade
Text excerpted from the Wikipedia article Trillium ovatum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
