Twolobe Larkspur
Delphinium nuttallianum
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Delphinium
- Species:
- Delphinium nuttallianum
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 2-3 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- mar, apr, may, jun, jul
- Bloom Colors:
- White, Blue, Purple
Native Range
United States: Arizona, California, Colorado, Idaho, Montana, Nebraska, New Mexico, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming, Canada: Alberta, British Columbia
Reported Fauna Sightings
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 open, mountainous regions
Germination Information
Pre-treatment: Extended cold, moist stratification is needed. Seed sown in late December and left outside did not germinate the first season, but germinated well after a second winter. Seed sown outdoors in November will germinate the following spring.
Establishment: Seedlings which germinated outside died when placed in the greenhouse. The fruit is a follicle and seed is black in color when mature. Seed is collected when the follicles begin to split in June. Collected material is stored in paper bags or envelopes at room temperature until cleaned.
Source: npn.rngr.net