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Stemless evening primrose

Oenothera triloba

Also called Evening primrose, Sessile evening primrose

Stemless evening primrose
Photo: Mason Brock (Masebrock), Public domain

Stemless evening primrose is a low, stemless winter annual from dry prairies and glades of south-central North America, producing large yellow flowers in spring that open near sunset. It grows best in full sun with sharp drainage and tolerates poor, disturbed soil.

Family
Onagraceae (Evening-primrose family)
Grows as
Annual
Light
Full sun
Water
Water sparingly; let the soil dry out between waterings and avoid soggy ground.
Soil
Well-drained, sandy or gritty soil; tolerates poor soil.
Temperature
10–25 °C; tolerates light frost once established.
How easy
Easy
Edible
Yes, some parts
Native range
Arizona to Missouri and N. Mexico
Climate
temperate

About

Oenothera triloba, with common names stemless evening primrose and sessile evening primrose is a flowering plant in the primrose family. It is native to North America, where it is primarily found in northern Mexico and in the south-central United States. It is found in dry, open areas such as glades, prairies, and sometimes even lawns. It appears to respond positively to soil disturbance.

It is a winter annual that produces large yellow flowers in the spring. The flowers open near sunset.

Uses

Among the Zuni people, the plant is used as an ingredient of "schumaakwe cakes" and used externally for rheumatism and swelling. They also grind the roots and use them as food.

Other Oenothera plants

Common evening primrose · Tufted Evening Primrose · Antioch Dunes evening primrose · Birdcage evening primrose · Beach evening primrose · Hooker's evening primrose · Narrowleaf evening primrose · Redsepal evening primrose · Cutleaf evening primrose · Lindheimer's Beeblossom · Threadleaf evening primrose · Longstem evening primrose

Text excerpted from the Wikipedia article Oenothera triloba 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.

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