Common Evening Primrose

How to grow Common Evening Primrose

Written by the GardenDecoded editorial team · Last reviewed 21 July 2026 · Written for UK gardens · How we research our guidance

Planting

A biennial: sow in late spring or early summer for a flat rosette the first year and flowers the second. Sow direct where it is to grow, as the taproot dislikes disturbance. Poor ground gives sturdier plants than rich soil, which produces tall floppy growth.

Pruning

None needed. Leave the flowering stem until seed has shed if you want it to continue, then pull the whole spent plant out.

Propagation

Seed only, and it self-sows freely once you have it. Thin seedlings to about 30 cm apart in their first summer.

Pests and diseases

Generally trouble-free. Downy or powdery mildew occasionally marks the leaves late in the season without much affecting flowering.

Value to wildlife

The flowers open in the evening and are scented, and are visited by moths. Goldfinches and other finches take the seed from the standing stems in autumn and winter.

Notes

Because each plant dies after flowering, you need overlapping generations to keep it going — sow two years running to start with. It seeds itself around vigorously, so it suits informal or wild areas better than a controlled border.

Some structured details on this page (such as tolerances, pH and hardiness) come from USDA PLANTS Database (public domain). The written guidance is GardenDecoded's own, researched as described in our editorial policy.

Other names for this plant

These names have all been used for Oenothera biennis but are no longer the accepted name. You may still meet them on old labels, in books, or in nursery catalogues.

Others in Oenothera