Seashore Lupine
Lupinus littoralis
- Native to:
- Canada, United States
Chris Light



Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Lupinus
- Species:
- Lupinus littoralis
- USDA Symbol:
- LULI2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- apr,may,jun,jul,aug
- Bloom Colors:
- blue, purple, white, yellow
- Ground Cover:
- Yes
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★☆ Butterfly & moth species supported by this genus (NWF)
- Pollen Specialist Bee Keystone:
- ★★☆☆☆ Native pollen specialist bee species supported by this genus (NWF)
Reported Fauna Sightings
Bees: Obscure bumble bee (Bombus caliginosus), Yellow-faced bumble bee (Bombus vosnesenskii)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, birds
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from root crown following fire; fire can reduce competing vegetation and benefit establishment.
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Commonly found in coastal dunes and sandy beaches.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 14–30 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 14–60 days
- Notes:
- Scarification of hard seed coat required; inoculation with lupine-specific Bradyrhizobium may improve establishment.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: Seashore lupine can be found from British Columbia to Northern California in the immediate vicinity of the shoreline. Germination rate varies with temperature.
Source: npn.rngr.net