Lupinus polyphyllus
A robust perennial lupine with palmate foliage and tall spikes of pea-like flowers. The species typically bears blue to purple flowers in dense terminal racemes. Forms substantial clumps with attractive divided leaves. Native to western North America.
Prefers cool summers and moisture-retentive soil. Can be short-lived in hot climates. The palmate foliage is attractive even when not flowering. Self-seeds where happy. Hybrid Russell lupines derive from this species. The native form has more naturalistic character than heavily bred cultivars.
Growing Conditions
Light: full sun to part shade
Moisture: moist
Soil: moisture-retentive
Hardiness zone: 3
Maintenance: moderate
Size & Habit
Height (cm): 100
Spread (cm): 60
Habit: upright clump
Seasonal Interest
Flowering period: June–July
Seasonal interest: early summer bloom; palmate foliage; tall spikes
Foliage: green
Flower: blue to purple
Ecology & Notes
Wildlife value: pollinators
Deer/Rabbit resistance: moderate
Habitat: cool borders; naturalistic plantings; native gardens
Features: tall flower spikes; palmate foliage; blue-purple flowers; substantial clumps; native; cool climate preference
Notes: native to W North America; prefers cool summers; parent of Russell hybrids; can self-seed