Evening Primrose - Oenothera biennis

The Evening Primrose is a unique beauty that blooms as the sun is setting, which is how it got its name. The petals visibly open in the evening and close with the sunrise, creating a strange phenomenon that is special to witness. A native of eastern and central North America, this flower can be found in multiple shades of pink, yellow and white that seem to glow under the moonlight.

Plant Details - Evening Primrose

Family: Onagraceae

Light Requirement: Full sun, Partial shade

Water Needs: Moderate

Height: 6-12 in

Spread: 12-18 in

Growth Rate: Moderate

Soil Preference: Rocky or sandy

Bloom Time: Late spring - late summer

Wildlife Value: Pollinators, Moths, Butterflies, Bees

Notable Characteristics - Evening Primrose

The Evening Primrose can be found in woodlands, prairies, and disturbed anthropogenic sites. It has a basal rosette of leaves which continue up its thick, hairy stem. Long, narrow leaves decrease in size towards the top of the stem, which can grow to be up to six feet tall under the right conditions. Its flowers start to bloom in a cone shape at the top six inches of the stem. Bees, butterflies and many other pollinators are attracted to the light lemon scent of the fragrant flowers.

Landscape and Maintenance

To bees and other pollinators, a nectar guide pattern is visible, which helps guide them to the nectar source and encourages pollination. The pattern is printed on the leaves but is invisible to the naked eye, except under UV light. Nocturnal moths pollinate this night-owl flower, as well as bees and other insects in the early morning. The Evening Primrose is also a host plant for the Primrose Moth, and the White-lined Sphinx Moth. The moths are known to lay their eggs on the flower buds and later, the resulting caterpillars eat the plants’ leaves. This life-cycle support is an important addition to the wildlife community of a native habitat. This moonlit flower is an exciting addition to your garden because of its wildlife value, and its unique evening blooms. Plant it to increase visual interest and beauty in your garden all day and night long!

This Is How Your Plants Will Look upon Delivery

Bloom Season

Spring

Bloom/Foliage Color

Yellow

Height at Maturity

Under 12"

Care

Evening Primrose thrives in well-drained soil and requires regular watering. Trim older flowers to encourage continuous blooming and prevent self-seeding. In spring, fertilize to support robust growth and flowering.

Plant Reproduction

Evening primrose spreads through seeds, underground rhizomes, and runners.

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