Riverbank Lupine

Riverbank lupine is a perennial legume native to the western regions of the Pacific Northwest. It typically grows in sandy or gravelly soils along riverbanks, roadsides, or in grasslands, producing distinctive tall spikes of vibrant purple to blue pea-like flowers in late spring and early summer. Its palmately compound leaves and deep taproot enable nitrogen fixation, improving soil fertility in nutrient-poor habitats. Riverbank lupine attracts native bees and other pollinators, stabilizes soils, and plays a key role in early successional plant communities and riparian ecosystems.

Note: All lupines are toxic to livestock and domestic animals.