When does Oenothera fruticosa bloom?

Oenothera fruticosa blooms from June through August, producing clusters of bright yellow, four-petaled flowers along upright stems.

What pollinators visit Oenothera fruticosa?

Bees, butterflies, and moths regularly visit the flowers of Oenothera fruticosa for nectar and pollen, making it a good choice for pollinator plantings.

How much sun and water does this plant need?

Narrow-leaf evening primrose grows best in full sun with medium soil moisture, though it can tolerate some part-sun conditions and brief dry spells once established.

Does Oenothera fruticosa spread in the garden?

This plant spreads by rhizomes and can form dense clumps over time, so many gardeners divide it every few years to keep beds tidy.

Is Narrow-leaf Evening-primrose toxic to livestock?

The USDA PLANTS Database does not flag Narrow-leaf Evening-primrose as toxic to livestock.

Is Narrow-leaf Evening-primrose HOA-friendly?

Narrow-leaf Evening-primrose is generally an HOA-friendly choice in the right placement, with low maintenance.

Narrow-leaf Evening-primrose

Name: Pollinator Patch
Author: Pollinator Patch

Oenothera fruticosa

Last reviewed: September 2026

Oenothera fruticosa is a sun-loving perennial forb that blooms bright yellow from June through August, doing well in medium-moisture, well-drained soils in meadows, roadsides, and open woodland edges.

Toxicity unknown

Narrow-leaf Evening-primrose (Oenothera fruticosa) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Narrow-leaf Evening-primrose as toxic to livestock.

Light

full sun

Water

medium

Size

12"–36" H × 12"–24" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, CT, DE and 21 more states

Pollinators

bees, butterflies, moths

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Piedmont Central Corn Belt Plains Eastern Corn Belt Plains Southern Michigan/Northern Indiana Drift Plains Northeastern Highlands Northeastern Coastal Zone Erie Drift Plain Northern Forests Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Blue Ridge Ridge and Valley Eastern Temperate Forests Central Appalachians Western Allegheny Plateau Interior Plateau Southern Coastal Plain Atlantic Coastal Pine Barrens

Narrow-leaf evening-primrose produces bright yellow, four-petaled flowers from June through August on upright stems. This native perennial forms neat clumps with narrow, lance-shaped leaves and blooms that open in the evening to attract night pollinators.

Growing Narrow-leaf Evening-primrose

Grow Narrow-leaf Evening-primrose in full sun and medium water. Mature plants reach 12 to 36 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Narrow-leaf Evening-primrose is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.

Works well in: front yard, foundation, mid zone.

Can spread by underground rhizomes if not managed
May look sparse in winter when dormant

Wildlife value

The flowers attract bees, butterflies, and night-flying moths, with evening blooms specifically adapted for nocturnal pollinators. Seeds provide food for birds and small mammals.

Common questions

When does Oenothera fruticosa bloom?: Oenothera fruticosa blooms from June through August, producing clusters of bright yellow, four-petaled flowers along upright stems.
What pollinators visit Oenothera fruticosa?: Bees, butterflies, and moths regularly visit the flowers of Oenothera fruticosa for nectar and pollen, making it a good choice for pollinator plantings.
How much sun and water does this plant need?: Narrow-leaf evening primrose grows best in full sun with medium soil moisture, though it can tolerate some part-sun conditions and brief dry spells once established.
Does Oenothera fruticosa spread in the garden?: This plant spreads by rhizomes and can form dense clumps over time, so many gardeners divide it every few years to keep beds tidy.
Is Narrow-leaf Evening-primrose toxic to livestock?: The USDA PLANTS Database does not flag Narrow-leaf Evening-primrose as toxic to livestock.
Is Narrow-leaf Evening-primrose HOA-friendly?: Narrow-leaf Evening-primrose is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Narrow-leaf Evening-primrose? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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