Evening Primrose (Oenothera biennis)

$4.00

Out of stock

Common Evening Primrose (Oenothera biennis)

A fascinating, structural biennial that dances to its own rhythm. Known for its unique "moonlight" blooms that open at dusk and close by mid-morning, it adds a touch of mystery and nighttime magic to the garden.


🌿 Key Traits

  • Night Bloomer: Fragrant, lemon-yellow flowers unfurl rapidly in the evening, often right before your eyes.

  • Unique Life Cycle: Spends its first year as a low rosette of leaves, then sends up a dramatic flowering stalk in its second year.

  • Impressive Height: Can reach 3–6 feet tall, creating a bold vertical statement.

  • Edible History: Historically used as both a food source (roots and shoots) and for its medicinal oil.

β˜€οΈ Growing Conditions

  • Light: β˜€οΈ Full Sun to Part Shade; very adaptable to various light levels.

  • Soil: 🌱 Thrives in poor, sandy, or rocky soils; avoids heavy, waterlogged ground.

  • Water: πŸ’§ Low to Medium; highly drought-tolerant once the taproot is established.

  • Hardiness: ❄️ Zones 4–9.

🌎 Ecological Benefits

  • Moth Magnet: A primary nectar source for Sphinx moths and other nocturnal pollinators.

  • Specialist Support: The primary host plant for the stunning Primrose Moth, whose pink-and-yellow caterpillars mimic the flowers.

  • Bird Buffet: Produces an abundance of seeds that are a critical winter food source for Goldfinches and Juncos.

  • Pioneer Species: Excellent for "rewilding" disturbed areas or filling in gaps in a new meadow.


πŸ“‹ Quick Stats

  • Type: Biennial (Self-seeding)

  • Bloom Time: June – September (Evening/Early Morning)

  • Spacing: 1–2 feet apart

  • Self-Seeding: Spreads easily by seed; perfect for naturalizing wilder areas of the landscape.

Photo credit: Christian Ferrer