Sierra Larkspur
Delphinium glaucum
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Delphinium
- Species:
- Delphinium glaucum
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 8-12 ft
- Light Requirements:
- Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- jul, aug, sep
- Bloom Colors:
- Blue, Purple
Native Range
United States: Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming, Canada: Alberta, British Columbia, Manitoba, Northwest Territories, Saskatchewan, Yukon
Reported Fauna Sightings
Bees: Fuzzy-horned bumble bee (Bombus mixtus), Fuzzy-horned bumble bee (Bombus mixtus), Morrison bumble bee (Bombus morrisoni), Morrison bumble bee (Bombus morrisoni), Nevada bumble bee (Bombus nevadensis), Nevada bumble bee (Bombus nevadensis), White-shouldered bumble bee (Bombus appositus), White-shouldered bumble bee (Bombus appositus), Yellow bumble bee (Bombus fervidus), Yellow bumble bee (Bombus fervidus), Yellow head bumble bee (Bombus flavifrons), Yellow head bumble bee (Bombus flavifrons)
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
Germination Information
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.
Source: OpenAI GPT-4o