Pink evening primrose
Oenothera speciosa, family Onagraceae
A pink wildflower that opens at night and spreads across open ground
Pink evening primrose is a perennial wildflower with cup-shaped, fragrant flowers that start white and turn pink. Native to central parts of the United States and northern Mexico, it grows in prairies and disturbed ground, and is often planted as a groundcover in gardens.
- Flowers open at night and close in full sun
- Blooms start white and turn pink as they age
- Spreads quickly by runners and seeds
- Young leaves and stems are edible before flowering
What does Pink evening primrose look like?
Pink evening primrose is a low-growing perennial with smooth to softly hairy stems reaching up to 50 cm tall. Its leaves are narrow to oval, sometimes with wavy or toothed edges, and sit close to the stem. The plant produces single flowers with four petals, each about 4 to 5 cm across. These blooms open pale or white and gradually turn pink, with yellow centers and yellow-tipped stamens and stigma. The flowers give off a gentle scent and are most often seen open in the early morning or at night.
Where does Pink evening primrose come from?
This wildflower is native to grassland and open areas in central regions of the United States and northern Mexico. Over time, it has spread widely, escaping gardens and naturalizing in many other states and parts of Mexico. Its ability to grow in disturbed soils and spread by both seeds and runners has helped it become common in new areas. The species name 'speciosa' means 'showy', reflecting its striking flowers.
When and how Pink evening primrose blooms
Pink evening primrose blooms mainly from March through July, with some flowers appearing again in autumn. It prefers sunny spots with loose, well-drained soil and can handle drought. The plant spreads easily, forming mats by sending out runners. It is grown from seeds or by dividing established clumps, and is often used as a groundcover in gardens where winters are not too harsh.
How Pink evening primrose is used
Gardeners plant pink evening primrose for its attractive, spreading flowers and ability to cover bare ground. The young leaves and stems can be eaten raw in salads or cooked, but are best picked before the plant flowers. In the wild, its blooms attract insects, especially moths, which visit at night when the flowers are open. However, in some places, the plant can become invasive.
Kinds of Pink evening primrose
There are several recognized varieties of this species, including Oenothera speciosa var. berlandieri, var. childsii, and var. speciosa. These differ slightly in their growth or flower traits, but all share the same general appearance and habits.
What Pink evening primrose means
Although sometimes called 'buttercups', pink evening primrose is not related to true buttercups. The plant is valued for its ornamental qualities and is grown in gardens across temperate regions. In Europe, it has been noted that some moths can become trapped in its flowers. Its showy appearance and ability to thrive in poor soils make it a popular choice for naturalistic plantings.
Where to see Pink evening primrose
Questions people ask about Pink evening primrose
Where does pink evening primrose come from?
Pink evening primrose is native to central regions of the United States and northern Mexico, where it grows wild in prairies, open woodlands, and disturbed ground.
What does the flower look like?
It has cup-shaped flowers with four petals, starting out white and turning pink as they age, with yellow centers. The blooms are about 4 to 5 cm wide and give off a light scent.
When does pink evening primrose bloom?
It mainly flowers from March to July, with some blooms appearing again in autumn, especially in its native range.
Is pink evening primrose edible?
Yes, the young leaves and stems can be eaten raw or cooked, but they are best harvested before the plant starts to flower.
Can it become invasive?
Yes, pink evening primrose can spread rapidly by runners and seeds, sometimes escaping gardens and becoming invasive in new areas.
Good reading and sources
- Lady Bird Johnson Wildflower CenterLady Bird Johnson Wildflower Center, Article
- USDA Plants DatabaseUS Department of Agriculture, Article
- Plants of the World OnlineRoyal Botanic Gardens, Kew, Plant database
- Where it has been recordedGBIF, Plant database
- Sightings and photos by naturalistsiNaturalist, Plant database
- Oenothera speciosa on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Oenothera speciosa", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). Phool rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes. It is not medical or foraging advice: many flowers are poisonous, and traditional uses are reported, not recommended. If something is wrong, tell us. Last refreshed 2026-10-03.
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