Common evening-primrose
Oenothera biennis L.
- light
- Sun–part
- water
- Medium
- tall
- 1.2 m
- wide
- 76 cm
Onagraceae
Also called Common evening primrose, Evening star, Evening-primrose, German Rampion, Noćurak
Formerly Brunyera biennis, Oenothera brevicapsula, Oenothera brevispicata, Oenothera cambrica, and 62 more
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- BiennialKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- Canada to C. MexicoKew's checklist, not yet checked
- Light
- Full sun to part shade (3 h or more)Read from NC State Extension, one source
- Height
- 91 cm to 1.5 mRead from NC State Extension, one source
- Spread
- 61 cm to 91 cmRead from NC State Extension, one source
- Water
- Average: moist, well drainedRead from NC State Extension, one source
- Flowers
- YellowRead from NC State Extension, one source
Not known yet: coldest it survives, heat, hottest it survives.
In other languages (12)
- root
- OENBIE, ᎠᎾᏓᏥ, Melyn yr hwyr
- German
- Gemeine Nachtkerze, Gewöhnliche Nachtkerze, Gewöhnliche Zweijährige Nachtkerze
- French
- onagre bisannuelle, Onagre bisannuelle
- Finnish
- iltahelokki
- Korean
- 달맞이꽃
- Catalan
- bella de nit, Bella de nit
- Polish
- Wiesiołek dwuletni
- Czech
- pupalka dvouletá
- Dutch
- teunisbloem, Middelste teunisbloem, middelste teunisbloem
- Japanese
- メマツヨイグサ, 雌待宵草
- Lithuanian
- Dvimetė nakviša
- Spanish
- onagra común, Onagra común
Where this comes from
- iNaturalist, read 2026-10-25, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, Public domain
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY-SA
- 3D model: Oenothera biennis (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.