Bloomipedia
Western white clematis (Clematis ligusticifolia)
Photo: Austin Saunders via iNaturalist · CC BY 4.0 · resized

Flower profile

Western white clematis

Clematis ligusticifolia

Native to Idaho

Western white clematis is a flowering plant that USDA PLANTS lists as native in the lower 48 states.

17states
431ID sightings*
3,332U.S. sightings*

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

On our lists for: Idaho

Quick look

Clematis ligusticifolia is a climbing, spreading vine with showy flowers. It is also known as old-man's beard, yerba de chiva, and virgin's bower,. It is native to North America where it is widespread across the western United States in streamside thickets, wooded hillsides, and coniferous forests up to 8,500 feet (2,600 m).

  • It belongs to the Ranunculaceae family. iNaturalist
  • USDA PLANTS describes it as a vine with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 17 states. USDA PLANTS
  • NatureServe lists it as native to Idaho. NatureServe
  • USDA PLANTS lists its flower color as white. USDA PLANTS
  • USDA PLANTS gives its bloom period as mid summer. USDA PLANTS
  • USDA PLANTS lists a mature height of about 1 ft. USDA PLANTS
  • iNaturalist has 431 research-grade sightings of it in Idaho, ranking #93 among the 109 flowers on our Idaho list. iNaturalist

Western white clematis gift ideas

Handmade western white clematis gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (300 records)

There are only a handful of Idaho flowering records, so this chart uses records from across the U.S.

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.
Rare elsewhere
Other states where NatureServe ranks it rare or missing: KS (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 petsToxic to dogs, cats and horses

ASPCA's entry “Leatherflower” (Clematis sp), which covers the whole genus, lists it as toxic to dogs, cats and horses. Signs include: Salivation, vomiting… 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 Western white clematis in 17 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

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

Idaho counties with USDA records: Ada, Adams, Bannock, Bear Lake, Blaine, Boise, Bonner, Bonneville, Boundary, Canyon, Cassia, Clearwater, Elmore, Gem, Gooding, Idaho, Jefferson, Kootenai, Lincoln, Nez Perce, Owyhee, Payette, Twin Falls, Valley, Washington.

More Idaho flowers

Sources