Bromus hordeaceus

Bromus hordeaceus_soft brome_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Synonyms: Bromus confertus Boreau. (B. racemosus and B. scoparious mistakenly used in some older references)

Common names: soft brome; soft chess; lopgrass

Bromus hordeaceus (soft brome) is an annual grass (family Poaceae) distributed at low elevation areas in California, especially in disturbed and open areas. Bromus hordeaceus out competes native grasses and is commonly eaten by range animals, although its forage value is very low. It can invade soils with low fertility, such as the serpentine soils that are home to rare plant species.

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.
  • CalWeedMapper - Statewide maps, climate models, and reports.
  • 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

    Symposium Presentations

    • Boyd, D. (1995). Use of fire to control French broom. California Exotic Pest Plant Council Symposium '95. J. Lovich, J. Randall and M. Kelly. Pacific Grove, CA..
    • Giessow, J. and P. Zedler (1996). The effects of fire frequency and firebreaks
      on the abundance and species richness of exotic plant species in coastal sage
      scrub. California Exotic Pest Plant Council Symposium '96. San Diego, CA.
    • Hastings, M. S. and J. M. DiTomaso (1996). Fire controls yellow starthistle
      (Centaurea solstitalis) in California grasslands. California Exotic Pest Plant
      Council Symposium '96. San Diego, CA.

    Cal-IPC News Articles

    • Hastings, M. and J. DiTomaso (1996). The use of fire for yellow starthistle Centaurea solstitialis) management and restoration of native grasslands at Sugarloaf Ridge State Park. CalEPPC News. 4: 4-6.
    • Young, S. L. (2002). Exploring alternative methods for vegetation control and maintenance along roadsides. CalEPPC News. 10: 5-7.