Origin: Introduced US Wildflower
Other Common Names: Large-flower Evening Primrose, Redsepal Evening Primrose
Bloom Time: Summer
Height: 24 in to 60 in
Spacing: 9 in to 15 in
Light: Full Sun
Soil Moisture: Dry
USDA Zone: 3a- 9a
Germination: No pre-treatment needed. Sow seeds just below soil surface at 70F and water.
Seeds Per Oz: 65000
When growing in the wild, the evening primrose acts as a primary colonizer, quickly appearing in bare, undisturbed patches of ground. It self-sows freely. The blossoms on this plant are yellow and open in the evening...hence the name evening primrose! The evening primrose is a very popular plant in ornamental gardens!