Evening primrose

Oenothera biennis

Evening primrose - Oenothera biennis

Common Name: Evening primrose
Genus: Oenothera
Species: biennis

Category: Wildflowers
Growth Rate: Average
Features: Has fragrant flowers/foliage, Good for wildlife, Long flowering period

Hardiness: HardyHeight: 1.50 m (150 cm)
Sun/Shade: Full sunSpread: 0.60 m (60 cm)

Foliage Type: DeciduousFlower Colour: Gold, Yellow
Foliage Colour: GreenFlowering Period: June to September

Soil Type: Normal/Loam or Sandy/Light or Chalky/Alkaline
Soil Moisture: Dry, well drained

Evening primroses are prized for their ephemeral flowers that open at night and fade by dawn and for their delicate fragrance that fills the air at dusk. The bowl-shaped pale yellow flowers which appear on tall spikes from June to September seem to glow as the light fades and age to dark golden-yellow. They are happiest in a sunny well-drained border or wildlife garden and as the name suggests are biennial. The flowers are an important source of nectar for bees and other insects and the seeds are used commerically for making evening primrose oil.

  • Garden care: Protect the young foliage from slug damage using beer traps or environmentally-friendly slug pellets.

Similar Plants:

Evening primrose - Oenothera pallida  'Innocence'

Evening primrose
Oenothera pallida 'Innocence'

Showy evening primrose - Oenothera speciosa

Showy evening primrose
Oenothera speciosa

Chilean evening primrose - Oenothera stricta  'Sulphurea'

Chilean evening primrose
Oenothera stricta 'Sulphurea'