Perennial or Biennial Herb: CA native. Fast growing and moderately long-lived. The 3 inch fragrant flowers open in late afternoon and are borne in clusters and held atop the stems. Bloom time: summer-fall. Bloom color: yellow. Attracts bees, birds, moths, and butterflies. Height: 3-6 feet. Width: 5 feet. Exposure: sun/part shade. Water: moderate. USDA Z6-9.