Large-leaved Lupine | Lupinus polyphyllus - Benton Soil And Water Conservation District

Large-leaved Lupine | Lupinus polyphyllus

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The largest lupine species. Large palmate leaves and showy white-pink to purple-blue pea-like flowers on stalks. Blooms May–August. Caution: all lupine species are toxic to livestock!

Plant Details

Habitats	Riparian Forests, Shrub Swamp, Shallow Marsh, Wet Prairie
Habitat Notes	Occurs in seasonally dry to marshy meadows, wetlands and damp forests, along stream banks and ditches, and in disturbed areas.
Phenology	Perennial; flowering May-August
Mature Height	1-5 feet
Shade Preference	Shade, part-shade, sun
Soil Tolerance	Prefers wet to moist soil.
Special Uses	Attracts insects, bees, hummingbirds; bank stabilization; ornamental.

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Native Plant Database

We have a large searchable database of plants that are native to the Willamette Valley and other parts of Benton County. View images and filter the list by plant characteristics

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A lush green riparian forest with tall red alder trees and a rocky stream running through it.

Riparian Forests

Riparian areas are defined by NRCS as ecosystems that occur along waterways and water bodies. They serve as the transition between aquatic and terrestrial zones.

Shrub Swamp

Shrub swamps are typically located in depressions, around lakes or ponds or on river terraces. They tend to flood seasonally and are dominated by shrubs or trees that are rooted in hydric soils. These…

A marshy landscape with tall grasses, a few scattered tree stumps, and a dense forest in the background.

Shallow Marsh

Marshes are seasonally or continually flooded and occur in depressions, around lakes or ponds and along slow-flowing streams. Shallow marshes support dominant herbaceous vegetation which is rooted in…

Wet Prairie

Wet prairies were once a common habitat in the floodplain of the Willamette River. These habitats occur on poorly drained clay soils or shallow soils above bedrock. Seasonal flooding creates anaerobic…