Showy Evening Primrose (Oenothera speciosa)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Wildflowers

Showy Evening Primrose
Oenothera speciosa

Showy Evening Primrose in flower
Showy Evening Primrose in flower
 
Features

Pink to white flowers with four petals; flowers open in the evening.

 
 
Culture

Full sun; moist, well drained soil.

 
 
Mature Height
6-24 Inches
 
Native To:
Illinois
Indiana
Iowa
Missouri
Ohio
 
USDA Hardiness Zone
3 - 8 
 
Bloom Color
Pink
 
 
Bloom Season
June - August
 
Soil Conditions
Moist, Well-Drained
 
 
Exposure/Light Requirements
Full Sun
 
 
Pests and Problems

Environmental Damage


Additional pests and problems that may affect this plant:

No serious insect or disease problems.
 
Additional Notes
Found in prairies. This plant can spread aggressively.