Notes:

O. biennis produce numerous seed pods containing many viable seeds and are very hardy plants. Lower leaves often have a slight red tint. Host plant to the Primrose Moth (Schinia florida), most likely to be found in the Northern and Western United States.

Each flower last only 24 fours before a new one replaces it the next day. They are typically finished blooming by mid day. Frequently visited by moths.

• Listing ID: 1180
• Duration: Biennial
• Soil Moisture: 1-5 (dry to wet): 2-4
• Stratification: No stratification required, light required for germination
• Bloom Time: July-October
• Sunlight Exposure: Partial shade to full sun
• Family: Onagraceae (Evening Primrose Family)
• Latin Name: Oenothera biennis
• Common Name: Common Evening Primrose
• Eco-Region: 251

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