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Oenothera harringtonii
Also called Arkansas Valley Evening Primose
Colorado Springs evening primrose is a small annual, biennial or short-lived perennial wildflower native only to southeastern Colorado, grown for its fragrant white flowers that fade pink. It needs full sun, good drainage and a dry, lean soil.
Oenothera harringtonii is a species of flowering plant in the evening primrose family known by the common names Arkansas Valley evening primrose and Colorado Springs evening primrose. It is endemic to the state of Colorado in the United States. It is named for the botanist Harold Harrington.
This species is part of the Oenothera caespitosa species complex. It is an annual, biennial, or short-lived perennial herb. It produces one or more stems from a basal rosette of leaves and a thick taproot. The stems reach up to 40 centimeters tall and are yellowish with reddish spots. The hairy leaves are roughly lance-shaped and have toothed edges. They are green with a yellowish or red-purple tinge and measure up to 14.5 centimeters in length. The plant bears 5 to 10 flowers at a time on each stem. The strongly fragrant flowers have petals up to 2.6 centimeters long which are white, fading pink.
Whitest evening primrose · California Evening Primrose · Evening Primrose · Common evening primrose · Tufted Evening Primrose · Woolly Beeblossom · Cleland's evening primrose · Crownleaf evening primrose · Velvetweed · Antioch Dunes evening primrose · Birdcage evening primrose · Oenothera dodgeniana
Text excerpted from the Wikipedia article Oenothera harringtonii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
