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Oenothera elata (Hooker’s Evening Primrose)

Hooker's Evening Primrose, Hairy Evening Primrose, Western Evening Primrose, Marsh Evening Primrose

Oenothera elata, Hooker's Evening Primrose, Hairy Evening Primrose, Western Evening Primrose, Marsh Evening Primrose, Yellow Flowers, Native Plants
Oenothera elata, Hooker's Evening Primrose, Hairy Evening Primrose, Western Evening Primrose, Marsh Evening Primrose, Yellow Flowers, Native Plants
Oenothera elata, Hooker's Evening Primrose, Hairy Evening Primrose, Western Evening Primrose, Marsh Evening Primrose, Yellow Flowers, Native Plants
Oenothera elata, Hooker's Evening Primrose, Hairy Evening Primrose, Western Evening Primrose, Marsh Evening Primrose, Yellow Flowers, Native Plants

Oenothera elata (Hooker’s Evening Primrose) is a tall biennial with one or more upright, unbranched stems boasting a profusion of large bright yellow flowers, 3 in. across (7 cm), with four heart-shaped petals in early summer to early fall. Borne singly along stout, reddish stems, the sweetly scented flowers open sequentially from the bottom upward and turn orange with age. As the common name implies, they open in the evening and remain open through late morning. The flowers are pollinated by moths, bees and butterflies. Emerging from a basal rosette of long, oblong leaves, 12 in. long (30 cm), the stems are covered with short, soft hairs and clasped by smaller stem leaves. The flowers are followed by cylindrical capsules that turn woody when mature, splitting lengthwise to release tiny seeds that ripen from late summer into fall. Songbirds feast on the seed. This Evening Primrose completes its life cycle in 2 years, its basal leaves becoming established the first year, while flowering occurs the second year. Providing a bold splash of color in the summer garden, this prolific seeder is perfect for moist or seasonally wet gardens.

  • Grows 3-5 ft. tall (90-150 cm) and 2-3 ft. wide (60-90 cm).
  • Best in full sun to part shade in virtually any moist, well-drained soils. Some drought tolerance once established.
  • Great choice for cottage gardens, wildflower gardens or naturalized areas.
  • No serious insect or disease issues.
  • Propagate by seed.
  • Native to much of western and central North America.

Requirements

Hardiness 7 - 9
Plant Type Perennials
Plant Family Onagraceae
Genus Oenothera
Common names Sundrop, Evening Primrose
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early, Mid, Late)
Fall
Height 3' - 5'
(90cm - 150cm)
Spread 2' - 3'
(60cm - 90cm)
Spacing 30" - 36"
(80cm - 90cm)
Maintenance Low
Water Needs Average, High
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Fragrant, Showy
Native Plants United States, Rocky Mountains, Pacific Northwest, Southwest, California, Midwest, Kansas, Washington, Idaho, Oregon, Texas, Oklahoma, Arizona, Nevada, New Mexico, Colorado, Wyoming, Utah, Montana
Tolerance Drought
Attracts Bees, Birds, Butterflies
Garden Uses Ponds And Streams
Garden Styles Prairie and Meadow, Informal and Cottage
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Alternative Plants to Consider

Camissoniopsis cheiranthifolia (Beach Primrose)
Calylophus lavandulifolius (Lavendar-leaf Sundrops)
Calylophus serrulatus (Plains Evening Primrose)
Oenothera pallida (Pale Evening Primrose)
Oenothera fruticosa (Sundrops)
Oenothera speciosa ‘Siskiyou’ (Evening Primrose)

Recommended Companion Plants

Mimulus cardinalis (Scarlet Monkey Flower)
Mimulus guttatus (Yellow Monkey Flower)
Anemopsis californica (Yerba Mansa)
Populus fremontii (Western Cottonwood)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 7 - 9
Plant Type Perennials
Plant Family Onagraceae
Genus Oenothera
Common names Sundrop, Evening Primrose
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early, Mid, Late)
Fall
Height 3' - 5'
(90cm - 150cm)
Spread 2' - 3'
(60cm - 90cm)
Spacing 30" - 36"
(80cm - 90cm)
Maintenance Low
Water Needs Average, High
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Fragrant, Showy
Native Plants United States, Rocky Mountains, Pacific Northwest, Southwest, California, Midwest, Kansas, Washington, Idaho, Oregon, Texas, Oklahoma, Arizona, Nevada, New Mexico, Colorado, Wyoming, Utah, Montana
Tolerance Drought
Attracts Bees, Birds, Butterflies
Garden Uses Ponds And Streams
Garden Styles Prairie and Meadow, Informal and Cottage
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Oenothera (Evening Primrose)
Not sure which Oenothera (Evening Primrose) to pick?
Compare Now

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