Riverbank Lupine | Lupinus rivularis
River lupine is a rapidly growing sub shrub that produces beautiful two toned pea-like flowers that range from deep purple to creamy white. Flowers bloom from March to August. The stems are reddish-brown and become woody at times. Leaves are well spaced throughout the stem with 5-9 leaflets. This species is an adept nitrogen fixer.
Caution: all lupine species are extremely toxic to livestock!
Plant Details
| Habitats | Riparian Forests, Riverbanks |
|---|---|
| Habitat Notes | Found only in Pacific Northwest riparian areas, marshes, stream banks, and moist meadows |
| Phenology | Perennial; flowering March-August |
| Mature Height | Up to 2 feet |
| Shade Preference | Full sun, part shade |
| Soil Tolerance | Moist to wet fine textured soil |
| Special Uses | Endangered species list in Canada |
