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Sand Evening Primrose

Oenothera rhombipetala

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Dry
Bloom time
Jun–Sep
Bloom color
Yellow
Notes
Sand, Biennial

About Sand Evening Primrose

Sand Evening Primrose is a striking biennial specifically adapted to the challenging conditions of sandy, well-drained landscapes. In its second year, this plant sends up a leafy, erect stem that typically reaches 1 to 3 feet in height, crowned with a dense spike of four-petaled, bright yellow flowers. These blossoms open sequentially from the bottom up, providing a long-lasting display from June through September. Native to the sandy prairies and dunes of the central United States, it is a champion of drought tolerance and thrives in full sun where other plants might struggle. The evening-opening flowers are a critical resource for nocturnal pollinators, especially Sphinx moths, while the foliage serves as a host for several specialized insect species. Because it is a biennial, it is important to allow the seeds to drop so that a new generation can establish itself. Its unique flower shape and rugged nature make it a perfect selection for sand gardens, restoration projects, or any low-water native planting where it can naturalize and thrive.

Native range

Native to 14 states:

ArkansasIowaIllinoisIndianaKentuckyMichiganMinnesotaMissouriNew JerseyNew YorkOhioSouth CarolinaWisconsinWest Virginia

County range map

BONAP county-level native range map for Oenothera rhombipetala

Range map courtesy of BONAP (Biota of North America Program).

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