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Bransford, W.D. and Dolphia
Oenothera elata Kunth
Onagraceae (Evening-Primrose Family)
USDA Symbol: OEEL
USDA Native Status: L48 (N)
A tall, erect, usually unbranched stem with large yellow flowers in a raceme.
Common Evening-primrose (O. biennis), found throughout most of the United States, has similar erect stems, but its petals are less than 1 (2.5 cm) long. Both are closely related to the Garden Evening-primrose (O. erythrosepala), scattered in the wild from western Washington to California, which is a taller plant, with redder sepals, paler petals about 1 1/2 (3.8 cm) long, and crinkled leaves.
Plant CharacteristicsDuration: Biennial Habit: Herb Leaf:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug , Sep
, WY Canada: NS Native Distribution:
Eastern Washington to Baja California; east to western Texas and southern Colorado. Native Habitat:
Open slopes, road banks, and grassy areas from the plains well into the mountains.
Growing ConditionsWater Use: High
Light Requirement: Sun
CaCO3 Tolerance: Low
BenefitConspicuous Flowers: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2010-06-04
Research By: TWC Staff