Oenothera biennis

Oenothera biennis

Yellow evening primrose

Previous scientific name(s): Oenothera biennis ssp. caeciarum, Oenothera biennis ssp. centralis, Oenothera biennis var. pycnocarpa, Oenothera muri

Low to moderate moisture requirement; full sunlight. Biennial, with fragrant yellow flowers, blooms July and August in open woods, fields, and disturbed areas. Valuable for erosion control.

Varieties: 

Species Attributes

Height: 
12 
- 60 
in.
Life Form: 
Biennial
Native or Introduced: 
Native
Precipitation: 
Low - Moderate
Sun & Shade Tolerance: 
Full Sun
Elevation: 
ft.

Soil Texture

Coarse: 
Average
Moderately Coarse: 
Best
Medium: 
Average
Moderately Fine: 
Not Adapted
Fine: 
Not Adapted

Soil pH

Acidic: 
Not Adapted
Neutral: 
Average
Basic: 
Marginal
Seeding Rate: 
PLS lbs/Acre
Pure Seed per Bushel: 
39.00 lbs.
Seeds per Pound: 
1,589,000
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes
Bloom Color: 
Yellow
Blooming Season: 
Summer