Oenothera flava (A. Nelson) Garrett
Long-tube evening-primrose, Shortfin evening-primrose, Yellow evening-primrose
Onagraceae (Evening-Primrose Family)
USDA Symbol: OEFL
Long-tube evening-primrose is a nearly stemless, clumped perennial with rosettes of deeply toothed, oblong-linear leaves. Flowers are slender-tubed, with four yellow petals and four green sepals. The sepals turn purple with age. The tufted plant is usually less than 8 in. tall.
From the Image Gallery
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug
DistributionUSA: AZ , CA , CO , ID , MT , ND , NE , NM , NV , OR , SD , TX , UT , WA , WY
Canada: AB , SK
Native Distribution: Sask. to NM, w. to ID & CA; also along the Yakima R., WA
Native Habitat: Damp, prairie swales; open, wooded areas; stream valleys
Growing ConditionsWater Use: Medium
Light Requirement: Sun
CaCO3 Tolerance: Low
Soil Description: Damp to drier soils.
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
Mr. Smarty Plants says
Possibility of Oenothera flava growing in Michigan
June 16, 2006
Oenothera flava (A. Nels) Garrett, is it true that this plant is not in Michigan? Is it rare or something? Because I had a hard time trying to find out what it was.
view the full question and answer
National Wetland Indicator Status
Additional resourcesUSDA: Find Oenothera flava in USDA Plants
FNA: Find Oenothera flava in the Flora of North America (if available)
Google: Search Google for Oenothera flava
MetadataRecord Modified: 2007-01-01
Research By: TWC Staff