Bloomipedia
Leavenworth's eryngo (Eryngium leavenworthii)
Photo: Sam Kieschnick via iNaturalist · CC BY 4.0 · resized

Flower profile

Leavenworth's eryngo

Eryngium leavenworthii

Leavenworth's eryngo (Eryngium leavenworthii) is a flowering plant in the Apiaceae family, native in the lower 48 states, blooming mostly August–October across the U.S.

Native to Oklahoma

Leavenworth's eryngo is a wildflower that USDA PLANTS lists as native in the lower 48 states.

6states where USDA records it
507OK sightings*
6,706U.S. sightings*

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

On our lists for: Oklahoma

Quick look

Eryngium leavenworthii, also known as Leavenworth's eryngo, is an annual plant in the family Apiaceae that is native to the central United States. It can reach heights up to 3 feet. It inhabits dry rocky prairies, roadside fields, open woodlands and waste areas. The plant is mostly found in areas with limestone or chalk soils.

  • It belongs to the Apiaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a annual life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 6 states. USDA PLANTS
  • NatureServe lists it as native to Oklahoma. NatureServe
  • iNaturalist has 507 research-grade sightings of it in Oklahoma, ranking #65 among the 159 flowers on our Oklahoma list. iNaturalist

When does it bloom?

Flowering records by month in Oklahoma (iNaturalist research-grade observations marked “Flowering”) (21 records)

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
Oklahoma
No list Oklahoma has no state law listing endangered or threatened plants, so we show NatureServe's Oklahoma ranks instead. NatureServe: SNR, not yet ranked in Oklahoma.
Rare elsewhere
Other states where NatureServe ranks it rare or missing: AR (S1). (S1 critically imperiled, S2 imperiled, SH possibly extirpated, SX presumed extirpated.)

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

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 leavenworth's eryngo in 6 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Arkansas, Kansas, Missouri, Oklahoma, Texas, Wisconsin.

Oklahoma counties with USDA records: Bryan, Carter, Choctaw, Comanche, Creek, Garvin, Jackson, Murray, Oklahoma, Payne, Pontotoc, Rogers, Tulsa.

Names, range and relatives

County records: USDA PLANTS lists it in 93 counties across 4 states; the most are in Texas (50), Kansas (29), Oklahoma (13).

Other Eryngium on Bloomipedia (1): Rattlesnake master.

More from the Apiaceae family (16 on Bloomipedia; most observed first): Queen Anne's lace (wild carrot), Common cowparsnip, Poison hemlock, Common hedge parsley, Fennel, Golden alexanders, Goutweed, Aniseroot.

More Oklahoma flowers

Common hedge parsley (Torilis arvensis)

Common hedge parsley

Torilis arvensis

Introduced

🌼 Few flowering records in OK
Green antelopehorns (Asclepias viridis)

Green antelopehorns

Asclepias viridis

Native

🌼 Blooms in OK: April–June
Texas paintbrush (Castilleja indivisa)

Texas paintbrush

Castilleja indivisa

Native

🌼 Blooms in OK: March–June

Sources