Oenothera biennis - Common Evening Primrose
Common Evening Primrose (Oenothera biennis) is a biennial that forms a short stubby rosette the first year, and becomes taller the second year when it flowers, seeds, and dies. It has a leafy, branched central stem that is covered with fine white hairs. Its alternate, lanceolate leaves can be up to 8" long and 2" wide. At the top of its stems are yellow, lemon-scented, four-petaled flowers that are up to 2" across. Per its common name, its flowers open in the evening through the over night and close by noon, but can remain open longer on cloudy days.
Soil Moisture: Moderate, Dry
Sun Exposure: Full Sun, Partial Shade
Height: 4' - 6'
Spread: 2' - 3'
Hardiness Zone: 3 - 9
Bloom Color: Yellow
Bloom Time: July, August, September, October
Attracts: Birds, Butterflies, Hummingbirds, Pollinators
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