Oenothera biennis (common evening-primrose, evening star, sun drop, weedy evening primrose, German rampion, hog weed, King's cure-all, or fever-plant.) is a species of Oenothera native to eastern and central North America, from Newfoundland west to Alberta, southeast to Florida, and southwest to Texas, and widely naturalized elsewhere in temperate and subtropical regions. Evening primrose oil is produced from the plant.
Leaf margins | other |
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Leaf arrangement | Alternate |
Plant growth form | herb |
Primary flower color | yellow |
Primary fruit color | brown |