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

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RESOURCES

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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