Bloomipedia
Pacific coralroot (Corallorhiza mertensiana)
Photo: Whitney Brook Matson via iNaturalist · CC BY 4.0 · resized

Flower profile

Pacific coralroot

Corallorhiza mertensiana

Native in the lower 48

Pacific coralroot is a wildflower that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 3 states, and across the U.S. it's most often seen in bloom in May–August.

7states
3of our state lists
5,809U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Alaska, Washington, Wyoming

Quick look

Corallorhiza mertensiana, or Pacific coralroot, is a coralroot orchid native to the shady conifer forests of northwestern North America. It also goes by the common names Western coralroot and Mertens' coralroot. Corallorhiza mertensiana was previously considered a subspecies of Corallorhiza maculata but was given species rank in 1997 by Freudenstein.

  • It belongs to the Orchidaceae 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 7 states. USDA PLANTS
  • NatureServe lists it as native to Washington, Wyoming and Alaska. NatureServe
  • In Washington, most iNaturalist sightings of it in flower come in May–August. iNaturalist
  • In Wyoming, most iNaturalist sightings of it in flower come in June–July. iNaturalist
  • iNaturalist has 1,988 research-grade sightings of it in Washington, ranking #97 among the 110 flowers on our Washington list. iNaturalist
  • iNaturalist has 525 research-grade sightings of it in Wyoming, ranking #54 among the 107 flowers on our Wyoming list. iNaturalist
  • iNaturalist has 451 research-grade sightings of it in Alaska, ranking #97 among the 108 flowers on our Alaska list. iNaturalist

Pacific coralroot gift ideas

Handmade pacific coralroot gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (917 records)
Bloom time in each of our 3 states
StateTypePeak bloomSightings*
WashingtonNativeMay–August1,988
WyomingNativeJune–July525
AlaskaNativefew records451

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G5 Secure worldwide. NatureServe
Washington
No list Washington has no state law listing endangered or threatened plants (the Washington Natural Heritage Program's rare plant list isn't regulatory), so we show NatureServe's Washington ranks instead. NatureServe: SNR, not yet ranked in Washington.
Wyoming
No list Wyoming has no state law listing endangered or threatened plants, so we show NatureServe's Wyoming ranks instead. NatureServe: S2, imperiled in Wyoming.
Alaska
No list Alaska has no state law listing endangered or threatened plants, so we show NatureServe's Alaska ranks instead. NatureServe: SNR, not yet ranked in Alaska.
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.

Please leave it where it grows

Please don't pick or dig this flower: NatureServe ranks it S2 in Wyoming. NatureServe

Can you eat it?

For peopleNot well documented

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.

For petsNot well documented

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 Pacific coralroot in 7 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Alaska, California, Idaho, Montana, Oregon, Washington, Wyoming.

Washington counties with USDA records: Chelan, Clallam, Cowlitz, Grays Harbor, Jefferson, King, Kittitas, Klickitat, Mason, Okanogan, Pend Oreille, Pierce, San Juan, Skagit, Skamania, Snohomish, Thurston, Whatcom.

Wyoming counties with USDA records: Teton.

Alaska counties with USDA records: Chugach, Copper River, Haines, Sitka.

More Washington flowers

Sources