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Arnica louiseana
Also called Snow Arnica
Lake Louise arnica is a small, low-growing alpine wildflower of the Canadian Rockies, rarely more than 20 cm tall, with fragrant yellow daisy-like flowers. It is hard to grow outside its native high-elevation habitat, so cultivation is rarely attempted.
Arnica louiseana is a Canadian species of flowering plant in the sunflower family, known by the common name Lake Louise arnica or snow arnica. It is native to the Canadian Rockies in Alberta and British Columbia, and named for Lake Louise in Banff National Park.
It is a small plant rarely more than 20 cm (8 in) tall. Flower heads are yellow, with both ray florets and disc florets. It grows at high elevations in alpine tundra and rocky outcrops.
Arnica louiseana is endemic to Canada and only grows in British Columbia and Alberta. There its range extends across 20,000 to 200,000 km2 (7,700 to 77,200 sq mi). The total number of populations is estimated at 21 to 80. All documented occurrences in Alberta are found in the southwest of the province in the Rocky Mountains. Its habitat is between 1,800 and 2,100 m (5,900 and 6,900 ft) in elevation.
Common leopardbane · Narrowleaf arnica · Serpentine arnica · Chamisso arnica · Heartleaf arnica · Mock leopardbane · Rayless arnica · Foothill arnica · Smallhead arnica · Snow Arnica · Lanceleaf arnica · Broadleaf arnica
Text excerpted from the Wikipedia article Arnica louiseana by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
