species 383 observations

Spearleaf Arnica

Arnica longifolia

Field notes

Arnica longifolia is a North American species of arnica in the sunflower family, known by the common names seep-spring arnica, longleaf arnica and spearleaf arnica. This flowering perennial is native to the forests of western Canada (British Columbia + Alberta) and the western United States (Rocky Mountains, Cascades, Coast Ranges, Sierra Nevada and other mountains of California, Oregon, Washington, Idaho, Nevada, Utah, Wyoming, Colorado, and Montana).

Supports All

19 native animals
supported in the US

Flower visitors Pollinators and other flower visitors Black-tailed Bumble Bee, White-fronted Small-Mason, Tiny Small Carpenter, Osmia subaustralis 19

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Key traits

Layer: Herbaceous plants
Light: Full sun
Moisture: Moist
Plant type: Perennial Wildflower

From USDA PLANTS and the Lady Bird Johnson Wildflower Center.