Trillium chloropetalum (Torr.) Howell
Giant Wakerobin, Giant Trillium
Liliaceae (Lily Family)
USDA Symbol: trch2
Starting with a single stalk, this clump-forming trillium may eventually bear several 12-24 in. stems. Leaves, in whorls of three, are often mottled with dark blotches. Large, showy, solitary, three-parted flowers rise directly out of the leaves. Color varies from red through yellow-green to white.
This trillium is considered "not commercially viable" since it takes as long as 5 years to produce plants of flowering size. One should verify that a nursery offering this plant has indeed propagated it and not dug it from the wild.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Complexity: Simple
Fruit Type: Berry
Size Notes: Up to about 2 feet tall.
Bloom InformationBloom Color: White , Red , Pink , Yellow , Green , Purple , Brown
Bloom Time: Feb , Mar , Apr , May , Jun
Bloom Notes: Flower color varies widely.
DistributionUSA: CA , OR , WA
Native Distribution: Pierce Co., WA & Willamette V., OR, s. to the n. Sierras & Coastal Ranges of c. CA
Native Habitat: Moist, brushy or wooded slopes
Growing ConditionsLight Requirement: Part Shade
Soil pH: Acidic (pH<6.8)
Soil Description: Deep, rich, moist, well-drained soils.
Conditions Comments: This trillium is considered "not commercially viable" since it takes as long as 5 years to produce plants of flowering size. One should verify that a nursery offering this plant has indeed propagated it and not dug it from the wild.
PropagationDescription: Rhizome division or seed. Seeds do best when planted outdoors soon after fruits have ripened. Plant seeds 1/4 in. deep in a moist, humusy location. Seedlings take many years to bloom. Divide rhizomes in fall.
Seed Collection: As the 1/2 in. long fruit ripens, the fleshy green oval berry becomes red then purple. Separate the flesh of the mature berry from the egg-shaped seeds and clean them.
Commercially Avail: yes
Mr. Smarty Plants says
Pictures and sources for black trilliums
June 10, 2008
Do you have pictures and/or sources for Black Trilliums?
view the full question and answer
Web ReferenceWebref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
From the ArchiveWildflower Newsletter 1987 VOL. 4, NO.1 - One Million Bequest Announced, Lady Bird Johnson On Celebrating Four Years, Spri...
Additional resourcesUSDA: Find Trillium chloropetalum in USDA Plants
FNA: Find Trillium chloropetalum in the Flora of North America (if available)
Google: Search Google for Trillium chloropetalum
MetadataRecord Modified: 2023-02-28
Research By: TWC Staff