Flower profile
Giant white wakerobin
Trillium albidum
Giant white wakerobin (Trillium albidum) is a flowering plant in the Melanthiaceae family, native in the lower 48 states, blooming mostly March–May across the U.S.
Giant white wakerobin is a wildflower that USDA PLANTS lists as native in the lower 48 states. In Oregon it's most often seen in bloom in March–April.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: Oregon
Quick look
Trillium albidum is a species of flowering plant in the bunchflower family Melanthiaceae. It is the only trillium characterized by a stalkless white flower. The species is endemic to the western United States, ranging from central California through Oregon to southwestern Washington. In the San Francisco Bay Area, it is often confused with a white-flowered form of Trillium chloropetalum.
- It belongs to the Melanthiaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 3 states. USDA PLANTS
- NatureServe lists it as native to Oregon. NatureServe
- In Oregon, most iNaturalist sightings of it in flower come in March–April. iNaturalist
- iNaturalist has 2,286 research-grade sightings of it in Oregon, ranking #72 among the 184 flowers on our Oregon list. iNaturalist
When does it bloom?
In Oregon, most flowering sightings come in March–April.
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G4 Apparently secure worldwide. NatureServe
- Oregon
- Not listed Not on Oregon endangered and threatened plants (OAR 603-073-0070). NatureServe: SNR, not yet ranked in Oregon. OAR 603-073-0070
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
It isn't on the ASPCA plant list.
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records giant white wakerobin in 3 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
California, Oregon, Washington.
Oregon counties with USDA records: Benton, Clackamas, Columbia, Douglas, Jackson, Josephine, Lane, Linn, Marion, Polk, Washington, Yamhill.
Names, range and relatives
County records: USDA PLANTS lists it in 27 counties across 3 states; the most are in California (12), Oregon (12), Washington (3).
Other Trillium on Bloomipedia (12): Pacific trillium, Large white trillium, Red trillium, Painted trillium, Prairie trillium, Toadshade, Little sweet betsy, Bashful wakerobin, Nodding trillium, Yellow wakerobin.
More from the Melanthiaceae family (18 on Bloomipedia; most observed first): Green false hellebore, Corn lily, Fremont's death camas, Common beargrass, Mountain deathcamas, Meadow deathcamas.
More Oregon flowers
Sources
- USDA, NRCS. PLANTS Database, profile TRAL4.
- iNaturalist, Trillium albidum: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Trillium albidum (lead quoted under CC BY-SA 4.0).
- Oregon: Oregon endangered and threatened plants (OAR 603-073-0070).
- Oregon: Oregon noxious weed quarantine, A and B weeds (OAR 603-052-1200).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Trillium albidum (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Sean Haight via iNaturalist · CC0 · resized.