— Short, snippet-friendly answers to the most-asked questions about Common Evening-Primrose (Oenothera biennis). For the full profile with citations, open the main page.
Common Evening-Primrose (Oenothera biennis) is a biennial plant native to the eastern and central United States, as well as parts of Canada and Mexico. Common Evening-Primrose (Latin: Oenothera biennis) is a medicinal plant catalogued in PlantSage.
Common Evening-Primrose is most often used to support better sleep. Each claim is rated by evidence strength - see the full profile for citations.
Common Evening-Primrose is generally considered safe when used at traditional doses. Always consult a clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children.
Common Evening-Primrose is a member native to ALA, ABT, ARK, BRC, CAL, and CNT. Common Evening-Primrose thrives in light to medium soil with a pH between 5 and 7.
Common Evening-Primrose grows best in USDA zone 4-8, 8/10 light, dry, moist water, and biennial life cycle. Detailed sowing, propagation, and care notes are on the full profile.
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