Sierra Larkspur
Delphinium glaucum
- Native to:
- Canada, United States
iNaturalist: © rkostecke (iNaturalist #29145234)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Delphinium
- Species:
- Delphinium glaucum
- USDA Symbol:
- DEGL3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 200 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- blue, purple, violet
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Reported Fauna Sightings
Bees: Nevada bumble bee (Bombus nevadensis), White-shouldered bumble bee (Bombus appositus), Yellow bumble bee (Bombus fervidus), Yellow head bumble bee (Bombus flavifrons)
Garden & Ecology Notes
- Wildlife Value:
- bees, hummingbirds, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers cool, moist environments
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–28 days
- Notes:
- Seeds require light for germination; sow on surface and do not cover deeply.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.
Source: Claude AI
ORGHPS Germination Guide: Sow @ 20C for 3 months, then place @ 4C for 3 months.