Native to a large area of the Southwest and Plains, this mounding, woody perennial blooms during the spring and summer with large clear yellow flowers. These blossoms have a 24 hour life span, opening at night and fading to an orange-pink color by late afternoon. Prune back in early spring to remove woody or frost-damaged stems. Use in well-drained soil, and be careful not to over water. Plants grow well in full sun at higher elevations, but prefer some shade in the low desert. This plant is very susceptible to flea beetles, but they are easily controlled with common insecticides.