Sand Wash Groundsel. Senecio flaccidus var. monoensis, Aster Family: ( Asteraceae ), Sand Wash Groundsel. Also called: Mono Ragwort, Shrubby Butterweed, or Smooth Threadleaf Ragwort, Bush Senecio, Creek Senecio, Comb Butterweed, Smooth Threadleaf Ragwort, Douglas Ragwort, Douglas Groundsel, Sand Wash Groundsel, Felty Groundsel, Old Man, Yerba Cana, Squawweed, or Cenicillo. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. These plants are dicots of the Asteraceae family growing as a subshrub - shrub. This plant is considered Native to the United States of America. Quick Notes: Height: Up to about 12 to 48 inches. Spreading out to about 38 inches wide. Flowers: Flowerheads 3 - 4 inches across; yellow ray florets and purplish brown disk florets. Eight - Thirteen Rays. The ray florets are sterile, and only the disk florets produce seeds. Flowering Time: March - May. Leaves: The leaves are pinnate with narrow, thread-like lobes. Found: Native of the southwestern Great Plains of North America. the southwest, and northern Mexico. Hardiness: USDA Zone 5b: to -26.1 �C (-15 �F) USDA Zone 6a: to -23.3 �C (-10 �F) USDA Zone 6b: to -20.5 �C (-5 �F) USDA Zone 7a: to -17.7 �C (0 �F) USDA Zone 7b: to -14.9 �C (5 �F) USDA Zone 8a: to -12.2 �C (10 �F) USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) 8.6 to 9.0 (strongly alkaline) Sun Exposure: Full Sun Elevation: 1,800 - 6,500 Feet. Habitat: Alkaline, well-drained/light soils. Dry slopes and washes. Miscellaneous: Flowering Photos Taken April 25, 2005. Castle Creek, Arizona.

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