Common evening primrose (Oenothera tetragona)
Care, watering, light and tips for Common evening primrose on Floravia.
Quick facts
- Family: Onagraceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Common evening primrose
Oenothera tetragona, commonly known as Square-bud Evening Primrose, is a herbaceous perennial that graces gardens with its vibrant, cup-shaped yellow flowers. Its blooms, opening at dusk and lasting until the following morning, offer a delightful nocturnal spectacle. It is ideal for borders, mass plantings, and cottage gardens, providing a touch of color and natural charm.
Native range
Eastern North America
Care tips
It prefers full sun exposure for abundant flowering, though it tolerates partial shade. It requires well-drained, sandy or loamy soil, and is quite drought-tolerant once established, so watering should be moderate. Avoid over-fertilizing, as this can promote foliage growth at the expense of flowers. A common mistake is planting it in heavy, wet soils, which can lead to root rot.
How to save a dying Common evening primrose
- Warning signs
- Yellowish or reddish leaves, soft stems, poor or no flowering, wilting.
- First aid
- Check drainage and soil moisture. Prune damaged stems. Repot if soil is very poor.
- What kills it
- Overwatering that rots the roots or lack of direct sun. Does not tolerate dense shade.
- Can it be saved?
- Yes, if roots are not completely rotted and conditions are corrected.