Evening primrose (Oenothera longiflora)
Care, watering, light and tips for 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 Evening primrose
Oenothera longiflora, also known as Long-flowered Evening Primrose, is an annual or biennial herbaceous plant belonging to the Onagraceae family, native to South America. It is distinguished by its large, fragrant pale yellow flowers that open at dusk and last until morning, adding an exotic touch to night gardens and containers. It is ideal for borders, rockeries, or to create a nocturnal focal point thanks to its ephemeral but spectacular bloom.
Native range
South America, mainly Argentina and Uruguay.
Care tips
It prefers full sun to partial shade exposure and well-drained soils, even poor or sandy ones. Watering should be moderate, allowing the substrate to dry out between waterings, as it is quite drought-tolerant once established. Avoid waterlogging, which can lead to root rot; this is a common mistake that can be fatal to this plant.
How to save a dying Evening primrose
- Warning signs
- Wilting, yellowing leaves, especially lower ones; no or very small blooms.
- First aid
- Move to a spot with more direct sun (min. 6h/day). Check drainage, water only when soil surface is dry.
- What kills it
- Too much shade and waterlogging. Needs full sun and well-drained soil to thrive.
- Can it be saved?
- Yes, if roots aren't rotted. A new location and proper watering can revive it.