Coulter's Lupine
Lupinus sparsiflorus
- Native to:
- Mexico, United States
gailhampshire (www.flickr.com) from Cradley, Malvern, U.K





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Lupinus
- Species:
- Lupinus sparsiflorus
- USDA Symbol:
- LUSP2
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 40 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- feb,mar,apr,may
- Bloom Colors:
- blue, purple, lavender, white
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)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Common in arid desert regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 14–30 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 14–30 days
- Notes:
- Scarification of hard seed coat recommended before cold stratification. Seeds may have variable dormancy.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Notes: Seeds may benefit from light exposure during germination.
Source: Claude AI