oenothera biennis, the common evening-primrose

meadow flower yellow plant wildflower prairie grass green field grassland nature lawn leaf sunlight shrub pasture produce autumn agriculture all background beautiful beauty biennis blooming bright closeup color common evening primrose cure cure-all drop environment evening-primrose fever fever-plant flora fresh freshness garden german growth hog weed king king#39aph39#s kings macro natural oenothera onagraceae outdoor rampion season star sun sundrop tree weedy species flowering family