Fourpoint Evening Primrose
Oenothera rhombipetala
Dr. Thomas Barnes, Universtiy of Kentucky
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Onagraceae
- Genus:
- Oenothera
- Species:
- Oenothera rhombipetala
Growth Characteristics
- Life Cycle:
- Annual | Biennial
- Growth Habit:
- Forb/herb
- Height:
- 4-6 ft
- Light Requirements:
- Full Sun, Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- may, jun, jul, aug, sep
- Bloom Colors:
- Yellow
Native Range
United States: Arkansas, Iowa, Illinois, Kansas, Louisiana, Michigan, Minnesota, Missouri, North Dakota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Wisconsin
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)
Host Plant for Caterpillars
Primrose Moth (Schinia florida)
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers open, sunny habitats