| Scientific Name: | Oenothera fremontii |
| Common Name: | evening primrose |
| Family Name: | Onagraceae |
| Origin: | U.S. - central |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Herbaceous perennial |
| Mature Size: | 0.2 - 0.4m x 0.3 - 0.6m (height x width) |
| Habit: | Arching |
| Form: | Mounded |
| Texture: | Fine |
| Landscape Uses: | Container planting, Perennial border, Rock garden |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Alternate, Spiraled, Soft flexible, Pubescent, Elliptic, Linear, Entire |
| Flowers: | Flowers solitary, Yellow, Jun-Jul-Aug-Sep-Oct |
| Fruit: | Capsule, Brown, Sep-Oct |
| Key ID Features: | |
| Leaves alternate, linear to narrowly elliptic, most 5-7cm long x 3-5mm wide; flowers with four bright yellow petals, ~7cm wide. | |