Common Evening Primrose (Oenothera biennis) is a striking biennial wildflower that brings bright yellow beauty and evening fragrance to wildflower meadows, pollinator patches, and informal planting schemes. Recognised by its tall, upright form and large, lemon-yellow blooms that open in the evening, this species is highly attractive to moths, bees, and other night-flying pollinators.

Thriving in well-drained, nutrient-poor soils and full sun, Common Evening Primrose is particularly well-suited to dry banks, verges, wildlife gardens, and brownfield sites. It self-seeds readily and is a valuable addition to planting schemes that aim to support nocturnal pollinators and increase biodiversity.

Features & Benefits
Bright yellow flowers open at dusk, attracting night-flying insects
Tall, upright stems with striking floral display
Ideal for sunny, well-drained soils including poor, sandy sites
Self-seeds and naturalises easily for lasting effect
Supports biodiversity with value for bees, moths, and other pollinators

Latin Name:
Oenothera biennis

Flowering Time:
June – September

Flowering Height:
90 – 150 cm

Life Cycle:
Biennial

Wildflower Seed Approximate Sowing Rate:
1.25kg per acre (3.1kg per hectare)

Sowing Times:
Spring (March – May) or Autumn (August – October)

How to Sow & Preparation
Choose an open, sunny position with free-draining soil.
Remove weeds and cultivate the area to a fine tilth.
Broadcast seed evenly across the soil surface—do not cover deeply.
Firm soil gently with a roller or by foot to ensure good contact.
Water lightly during dry spells.
Biennial growth means flowering will occur in the second year after sowing.

About John Chambers Wildflower Seeds
John Chambers Wildflower Seeds has been a trusted supplier of native UK wildflower seeds for over 35 years. Known for its high-quality, locally sourced seed and outstanding customer service, John Chambers provides ecological solutions for landscape contractors, local authorities, and conservationists focused on creating sustainable, biodiverse landscapes.

Latin Name | Oenothera biennis

Flowering Time | June – September

Flowering Height | 90 – 150 cm

Life Cycle | Biennial

Sowing Rate | 1.25 kg per acre (3.1 kg per hectare)

Sowing Period | Spring (March – May) or Autumn (August – October)

Preferred Conditions | Full sun, dry and well-drained soils

Pollinator Friendly | Yes

Minimum Order Quantity | 10g

Ideal For | Dry banks, wildlife gardens, informal meadows, brownfield sites