Desert Evening Primrose
Oenothera primiveris
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Onagraceae
- Genus:
- Oenothera
- Species:
- Oenothera primiveris
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 1-2 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- feb, mar, apr, may
- Bloom Colors:
- Yellow
- Ground Cover:
- Yes
Native Range
United States: Arizona, California, New Mexico, Nevada, Texas, Utah
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
- Bee Keystone:
- ★★★☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to arid and semi-arid regions
Germination Information
Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days
Notes: Seeds germinate readily without pretreatment.
Source: OpenAI GPT-4o