Dusky Onion
Allium campanulatum
Susan Durham
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Amaryllidaceae
- Genus:
- Allium
- Species:
- Allium campanulatum
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Geophyte
- Height:
- 1-2 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may, jun, jul, aug
- Bloom Colors:
- White, Purple
- Ground Cover:
- Yes
Native Range
United States: California, Nevada, Oregon, Washington
Reported Fauna Sightings
Bees: Two-form bumble bee (Bombus bifarius), Two-form bumble bee (Bombus bifarius), Western bumble bee (Bombus occidentalis), Western bumble bee (Bombus occidentalis), Yellow-faced bumble bee (Bombus vosnesenskii), Yellow-faced bumble bee (Bombus vosnesenskii)
Soil Requirements
- Soil Type:
- rocky, well-drained sandy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to mountainous regions, prefers open, sunny areas