Skip to content
opens in a new window

Oenothera missouriensis Evening Sun

Bright yellow flowers create striking displays against silvery green foliage.
  • Flowers open in the afternoon and bloom throughout the night, attracting butterflies and moths.  
  • North American native is tolerant of a wide range of soil types.
  • Drought tolerant once established and low maintenance.
  • Requires less chemicals and features less shrink for simplified production.
Awards :

Colorado State University Top Performer 2024, PA State University Trials Best of Species 2022

GENERAL INFORMATION

Scientific Name: Oenothera missouriensis
CommonName: Missouri evening primrose
Hardiness Zone: 5a - 9b
Hardiness Degree: -20°F (-20°C)
Blooming Season: Spring, Late Spring, Summer
Plant Habit: Spreading
Characteristics: Attracts Butterflies, Deer Resistant, Drought Tolerant, Rabbit Resistant, Colorful/Attractive Foliage, Fragrant Flowers, Low Maintenance
Water: Light
Fertilizer: Once a month
Spacing: 17 - 19" (43 - 48cm)
Height: 3 - 6" (8 - 15cm)
Width: 15 - 18" (38 - 46cm)
Exposure: Sun

PROPAGATION

Media EC/pH: EC 1.2-1.5 mmhos/pH 5.8-6.2
Soil Temperature: 70-72°F (21-22°C)
Rooting Hormone: 1,000 ppm IBA
Mist: Low to moderate
Fertilization: 50 ppm N when roots become visible
Pinching: Benefits from one pinch prior to transplant.
Transplanting: 42-45 days after sticking
Comments: Don't oversaturate the media. Remove from mist once root initials are visible.

FINISHING

Media pH: 5.8-6.2
Temperature: Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)
Light Level (fc): 5,000 to 8,000
Vernalization: No
Daylength: Day length neutral
Watering: Allow media to dry slightly between watering.
Fertilization: Use a balanced fertilizer at a rate of 100 to 150 ppm.
Pinch After Transplant: Typically not required
Plant Growth Regulators: PGRs generally not needed
Pests and Fungal Diseases: Watch for crown rot if overwatered.

CROP SCHEDULING

1–qt. (10–cm) pot, 1 plant per pot: 6-8 wks
1–gal. (15–cm) pot, 1 plant per pot: 10-12 wks
2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot: 12-14 wks
Bloom Months: March to October
Plant Protection
'Evening Sun'
Protection Information : PP35,065
(Flowering Only License)
Breeder: Darwin Perennials
Oenothera missouriensis Evening Sun
Photo:  Bloom Photo:  Landscape