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Evening Primrose

Oenothera biennis

Evening Primrose, is a distinctive biennial that features robust, sprawling growth and can reach up to 4 feet in height. Its bright yellow flowers bloom from late afternoon until morning, filling the air with a sweet fragrance that attracts nocturnal pollinators like moths. The flowers are supported on tall, sturdy stems that emerge from a rosette of lance-shaped leaves. This plant thrives in full sun and well-drained soils, making it a versatile addition to wildflower meadows, borders, or naturalized areas where its night-blooming flowers can be fully appreciated.

Details

Height24” - 60”
Spread18"
Bloom SeasonJune – September
Soil Types
loamLoam
sandSand
gravelGravel
Soil Moisture
mediumMedium
moistMoist
Sun Exposure
partSunPart Sun
fullSunFull Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

  • Allow this biennial to reseed itself or otherwise encourage some seedlings to take root to prevent extinction in your yard.
  • Deadhead some spent blooms to encourage more flowering and prevent excessive self-seeding.

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