Botanical Name: Oenothera macrocarpa
Common Name: Missouri Evening Primrose  
Plant photo of: Oenothera macrocarpa
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Water Saving Tip:

Apply a layer of mulch around plants to reduce moisture loss.

Choose organic mulches, such as shredded bark, compost or aged sawdust.

  • Anatomy

  • Culture

  • Design

Plant Type

Ground cover, Perennial


Height Range

Under 1'


Flower Color



Flower Season



Leaf Color

Green, Red


Bark Color



Fruit Color



Fruit Season






Low, Medium


Growth Rate



Soil Type

Sandy, Clay, Loam, Rocky, Unparticular


Soil Condition

Average, Rich, Poor, Well-drained, Dry


Soil pH



Adverse Factors


Design Styles

English Cottage, Meadow, Mediterranean, Ranch, Spanish


Accenting Features

Showy Flowers


Seasonal Interest



Location Uses

Perennial Border, Parking Strip


Special Uses

Erosion Control, Mass Planting


Attracts Wildlife

Hummingbirds, Butterflies

Information by: Stephanie Duer
  • Description

  • Notes

Missouri evening primrose is a sprawling perennial that typically grows 6 to 12 inches tall and 12 to 18 inches across, though through reseeding, it can spread farther. It has singe, 4-petaled, mildly fragrant, bright yellow flowers which open for only one day (usually open late afternoon and remain open until the following morning). Flowers are generally upward-facing, but sometimes rest on or touch the ground. Long spring to summer bloom period. Flowers are followed by somewhat unique, winged seed pods. Narrow, lance-shaped leaves. Stems are sometimes a vivid crimson red. Grow in rock gardens, perennial borders, parkstrips, and evening gardens. Many cultivars available.
Grown in average, dry to medium, well-drained soil in full sun. Tolerates poor and/or limy soils, drought, and some light shade. Easily grown from seed and will self-seed under optimum growing conditions (which is almost anything). Doesn't grow well in wet soils. This species was formerly called (and is still often listed for sale as) Oenothera missouriensis.