Narrowleaf Lupine
Lupinus angustifolius
- Native to:
- Albania, Bulgaria, Corse, East Aegean Is., Egypt, France, Greece, Italy, Kriti, Lebanon-Syria, Libya, Morocco, Palestine, Portugal, Sardegna, Sicilia, Spain, Tunisia, Türkiye-in-Europe
Roger Culos
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Lupinus
- Species:
- Lupinus angustifolius
- USDA Symbol:
- LUAN4
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- blue, purple, white
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)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 5.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Thrives in poor soils typical of its native range.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 7–14 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 10–21 days
- Notes:
- Scarify seed coat (e.g., with sandpaper or hot water) before cold stratification to improve germination.
Pre-treatment: Scarification and a warm greenhouse
Establishment: This plant is generally distributed in various areas in the US (including Maine and Florida) and Western Canada.
Source: npn.rngr.net