San Bernardino Larkspur
Delphinium parryi
- Native to:
- Mexico, United States
iNaturalist: © pleistocene (iNaturalist #185344265)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Delphinium
- Species:
- Delphinium parryi
- USDA Symbol:
- DEPA2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- apr,may,jun,jul
- Bloom Colors:
- blue, purple, violet
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- hummingbirds, bees, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- well-drained, rocky or sandy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to dry slopes and chaparral regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–28 days
- Notes:
- Requires light for germination; sow on surface. Cool temperatures (55-65°F) improve germination rates.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds treated with dry heat at 120 C for 5 minutes resulted in decreased germination.
Establishment: The plant is found within the mattoral vegetation association of California. Avoid pre-treatment with dry heat as it decreases germination.
Source: npn.rngr.net
ORGHPS Germination Guide: Seeds should germinate at room temperature, without darkness; see http://www.delphinium.co.nz/Germination.htm