Stipa miliacea var. miliacea

Synonyms: Piptatherum miliaceum; Agrostis miliacea L., Oryzopsis miliacea

Common names: smilo grass; bamboo grass; milo; ricegrass; rice millet; millet mountain-rice; San Diego grass

Stipa miliacea var. miliacea (smilograss) is a tufted perennial grass (family Poaceae) that thrives in dry or moist sites in disturbed areas, along roadsides and ditches. It can be found scattered along California’s coast and central valley and appears to be increasing in riparian areas and canyons, especially in southern California.

Rating: Limited

Cal-IPC Resources

  • Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.
  • Cal-IPC News - Our quarterly newsletter. Each issue is available as a pdf.
  • Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium.
  • Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.

    Other Resources

    • USDA PLANTS database -
      Federal database with information on identification and distribution, and links to websites in individual states.
    • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
    • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
    • CalPhotos - Images of plants taken mostly in California.

    Symposium Presentations

    • Clines, J., J. DiTomaso, et al. (2004). Grasses working group. California Invasive Plant Council Symposium 2004. Ventura, CA.
    • DiTomaso, J. M. (2005). 2005 Cal-IPC weed alerts, new invasions, recent expansions, and a few others to be on the look-out for…. California Invasive Plant Council Symposium 2005. Chico, CA.
    • Dudly, T. (2003). Riparian invaders: A multi-species approach. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
    • Thomsen, C. D., W. A. Williams, et al. (1996). Yellow starthistle management with grazing, mowing, and competitive plantings. California Exotic Pest Plant Council Symposium '96. San Diego, CA.

    Cal-IPC News Articles

    • DiTomaso, J. (2006). New weed alerts! Cal-IPC News. 13: 4-5.
    • Owen, K. (2004). An island called Santa Cruz: Removing invasives on the Channel Islands. Cal-IPC News. 12: 4-5,13.