Hairy evening primrose (Oenothera villosa)
Care, watering, light and tips for Hairy 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 Hairy evening primrose
Oenothera villosa, commonly known as hairy evening primrose or 'buttnattlys' in some regions, is a perennial or biennial herbaceous plant native to North America. It is characterized by its vibrant yellow flowers that open at dusk and last until the following morning, providing a nocturnal display. It is ideal for naturalistic gardens, rockeries, or as part of a wildflower meadow, attracting nocturnal pollinators.
Native range
North America
Care tips
It prefers full sun exposure for abundant flowering, though it tolerates some partial shade. Watering should be moderate, allowing the substrate to dry out between waterings, as it is quite drought-tolerant once established. It thrives in well-drained soils, preferably sandy or rocky, and is not demanding in terms of nutrients. A common mistake is overwatering, which can lead to root rot and shorten its lifespan.
How to save a dying Hairy evening primrose
- Warning signs
- Yellowish or reddish leaves, weak and limp stems, lack of flowering or prematurely wilted flowers.
- First aid
- Check drainage and sun exposure (needs full sun). Ensure regular watering without waterlogging. Remove badly damaged leaves.
- What kills it
- Excessive shade and prolonged waterlogging that rots its roots. Also extreme and prolonged drought. Does not tolerate salt.
- Can it be saved?
- Yes, if roots are not completely rotted or dehydrated. Act quickly by correcting the environment and watering.