Bloomipedia
Sagebrush buttercup (Ranunculus glaberrimus)
Photo: John Gaskin via iNaturalist · CC0 · resized

Flower profile

Sagebrush buttercup

Ranunculus glaberrimus

Native in the lower 48

Sagebrush buttercup 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 February–May.

14states
3of our state lists
4,409U.S. sightings*

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

On our lists for: Idaho, Montana, Wyoming

Quick look

Ranunculus glaberrimus, the sagebrush buttercup, is a species of flowering plant in the buttercup family, Ranunculaceae. It is native to interior western North America, in western Canada, the western United States, and the northwestern Great Plains.

  • It belongs to the Ranunculaceae 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 14 states. USDA PLANTS
  • NatureServe lists it as native to Idaho, Montana and Wyoming. NatureServe
  • In Idaho, most iNaturalist sightings of it in flower come in February–May. iNaturalist
  • In Montana, most iNaturalist sightings of it in flower come in March–May. iNaturalist
  • USDA PLANTS lists its flower color as yellow. USDA PLANTS
  • USDA PLANTS gives its bloom period as mid spring. USDA PLANTS
  • USDA PLANTS lists a mature height of about 0.5 ft. USDA PLANTS
  • iNaturalist has 799 research-grade sightings of it in Idaho, ranking #31 among the 109 flowers on our Idaho list. iNaturalist
  • iNaturalist has 665 research-grade sightings of it in Montana, ranking #63 among the 109 flowers on our Montana list. iNaturalist
  • iNaturalist has 312 research-grade sightings of it in Wyoming, ranking #92 among the 107 flowers on our Wyoming list. iNaturalist

Sagebrush buttercup gift ideas

Handmade sagebrush buttercup gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (1,225 records)
Bloom time in each of our 3 states
StateTypePeak bloomSightings*
IdahoNativeFebruary–May799
MontanaNativeMarch–May665
WyomingNativeMarch–June312

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
Idaho
No list Idaho has no state law listing endangered or threatened plants, so we show NatureServe's Idaho ranks instead. NatureServe: SNR, not yet ranked in Idaho.
Montana
No list Montana has no state law listing endangered or threatened plants, so we show NatureServe's Montana ranks instead. NatureServe: S5, secure in Montana.
Wyoming
No list Wyoming has no state law listing endangered or threatened plants, so we show NatureServe's Wyoming ranks instead. NatureServe: S5, secure in Wyoming.
Rare elsewhere
Other states where NatureServe ranks it rare or missing: AZ (S2). (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 peopleToxic (moderate, per USDA)

USDA PLANTS rates its toxicity as “moderate.” (USDA's rating covers people and livestock and doesn't say which parts.) NC State Extension has no page for it. USDA PLANTS

For petsToxic to dogs, cats and horses

ASPCA's entry “Buttercup” (Ranunculus spp), which covers the whole genus, lists it as toxic to dogs, cats and horses. Signs include: Vomiting, diarrhea, depression, anorexia, hypersalivation, oral ulcers and wobbly… ASPCA

🌿 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 sagebrush buttercup in 14 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Arizona, California, Colorado, Idaho, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, Wyoming.

Idaho counties with USDA records: Ada, Adams, Bannock, Benewah, Blaine, Boise, Bonner, Bonneville, Butte, Camas, Canyon, Cassia, Clark, Clearwater, Custer, Elmore, Gem, Gooding, Idaho, Kootenai, Latah, Lemhi, Lincoln, Nez Perce, Owyhee, Twin Falls, Washington.

Montana counties with USDA records: Beaverhead, Big Horn, Blaine, Broadwater, Carbon, Carter, Cascade, Chouteau, Custer, Daniels, Dawson, Fallon, Flathead, Gallatin, Glacier, Hill, Jefferson, Lake, Lewis and Clark, Liberty, Madison, McCone, Meagher, Missoula, Park, Phillips, Pondera, Powder River, Powell, Richland, Roosevelt, Rosebud, Sanders, Sheridan, Silver Bow, Stillwater, Sweet Grass, Toole, Treasure, Valley, Wheatland, Wibaux, Yellowstone.

Wyoming counties with USDA records: Albany, Big Horn, Campbell, Carbon, Crook, Fremont, Hot Springs, Johnson, Laramie, Natrona, Park, Sheridan, Sublette, Sweetwater, Teton, Washakie, Weston.

More Idaho flowers

Sources