Deciduous (sometimes only partly so) upright shrub to about 6×6’, full to part sun, moderate water, 15˚F. A very good pollinator plant with fragrant flowers most of the year. Short dormancy. Reseeds readily. Many granivorous birds like goldfinches love to eat the seeds. Many butterflies and bees are served with its nectar-rich flowers. Cut back as needed. Found in rocky or gravelly hills, sandy or limestone soils, and arroyos, around 3,000-4,000 ft. in southern Arizona to west Texas; south through Mexico into South America.