| | | Family | Onagraceae | | Plant Type | herbaceous perennial | | Zone | USDA: 3a - 8b RHS: H EGF: H1 - H4 Australia: 1 - 2 | | Care Level | low, easy, suitable for beginners. | | Height | 30 - 60 cm (1 - 2 ft) | | Spread | 45 - 60 cm (1.5 - 2 ft) | | Light | full sun | | Soil Moisture | average to moist, well-drained | | Soil Type | | | Soil pH | | | | Description | The herbaceous perennial Oenothera pilosella (evening primrose) bears showy flowers during early summer to mid-summer. | | Cautions | Where conditions are favourable, Oenothera pilosella (evening primrose) can be invasive and may require maintenance to keep it under control. | | |