Lupinus rivularis (Riverbank Lupine)

Plant Description: This lupine sometimes is considered a subshrub, forming a woody base at times. Stems are reddish brown, and leaves are well spaced and composed of 5-9 leaflets. Inflorescence is a large open spike with flowers in whorls. The pea-like flowers in streambank lupine are two toned, ranging from purple to creamy white. The fruit is a somewhat hairy pod that turns dark as it ages. Height: 2ft Width: 1.5ft Watering needs: medium Sun needs: Full sun Soil needs: well-draining, low-organic matter Bloom Time: May-August Portland Plant List (Backyard Habitat Certification): Yes Landscape Use and Ecological Function: This Willamette Valley native is found only in the Pacific Northwest. It grows in riparian zones including river banks, and moist meadows. This nitrogen-fixing plant thrives in very poor nutrient soils. Often grows after landslides. *Photo by SevenOaks Nursery*