Hooker's evening primrose
Found in coastal areas from Sonoma County down to San Diego County. A vigorous, showy, winter-deciduous perennial that makes a dramatic border or background planting in full-sun gardens. In late summer into early fall, sprays of large, cheery, bright-yellow flowers with flat, papery petals top tall stalks up to 5’ high that are clothed with light-green lanceolate leaves. Blossoms provide a late season sweet treat for native butterflies and bees. As the name suggests, flowers fold and close during the heat of the day. May vigorously seed about. Moderate to occasional water once established.