May 26, 2025 Narrow Leaf Sundrops (Oenothera fruticosa), a member of the Evening Primrose (Onagraceae) family. Native to much of eastern North America. Narrow Leaf Sundrops are perennial plants that grow to a height of 18 to 36 inches. The brilliant yellow flowers attract Beetles, Butterflies, Moths, Skippers, Bees, and Hummingbirds. The seeds entice Goldfinch,…