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Oenothera biennis

Evening Primrose (Evening Star, King's cure-all)

The fragrant, yellow blooms appear on tall spikes opening in the evening and closing by noon the next day. Flowers do not normally appear until the second year's growth.

  • »  Fragrant yellow saucer-shaped flowers appear on tall stalks
  • »  Blooms open at dusk and closing by noon the following day
  • »  Lance-shaped, slightly serrated, mid-green leaves
  • »  Biennial, self-seeding perennial
  • »  Flowers form on second year's growth
  • »  Bloom Time: June to September
  • »  Flower Size: 2.5 cm

Plug50
$6.83
1 Litre
$17.33
  • Category:Perennials
  • Hardiness Zone:4
  • Height:100-150 cm
  • Spread:30-45 cm
  • Bloom Color: Yellow
Exposure
• Full Sun
Soil Moisture
• Moist to Average
• Well-drained
Attracts Wildlife
• Attracts Butterflies
Growth Rate
• Medium
Attributes
• Native to Ontario
• Fragrant
• Long Blooming
Flowering Time
• Lt. Spr-Sum
• Summer
• Lt. Sum-Fall
Habit
• Clumping
• Upright
Foliage Color
• Green
Landscape uses
• Naturalizing
• Roadside planting
Planting instructions
• Container Plants
Additional Information about Oenothera biennis

Native to Ontario

Its roots during the first year of growth are edible and the seeds are important as bird feed. Seeds can remain viable in the soil for up to 70 years.

Growing & Maintenance Tips for Oenothera biennis

Thrives in full sun with average moisture in a somewhat sandy soil. Can be found along roadsides, in abandoned fields, slopes, vacant lots and ditches.