Avena barbata

Avena barbata_slender oat_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: slender oat

Avena barbata (slender wild oat) is a winter annual grass (family Poaceae) that grows in nearly every grassland area of the state. It does well in sandy/poor soils, often on the road verges. It is one of the annual grasses that was introduced as a forage species and has replaced the native perennial grasses.

Cal-IPC Rating: Moderate

Cal-IPC Assessment

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.

Weed RIC Management Notes

  • Management Notes - Information on management techniques and effectiveness from the University of California Cooperative Extension’s Weed Research & Information Center.

Cal-IPC Newsletter Articles

Cal-IPC Symposium Presentations

  • McGray, H. G. and K. N. Suding (2010). Resident community species diversity and invader genetic diversity do not affect the establishment of an annual exotic grass. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council
  • McGray, H., M. Lombardo, et al. (2008). Interactive effects of population genetic diversity and resident community composition on the success of an annual exotic invasive species. California Invasive Plant Council Symposium 2008. Chico, CA, California Invasive Plant Council.
  • Burrascano, C. (2001). Review of the impact of invasive weeds on two endangered plant species: Acanthomintha ilicifolia (San Diego thornmint) and Monardella linoides ssp. viminea (willowly monardella). California Exotic Pest Plant Council Symposium 2001. San Diego, CA.
  • Corbin, J. D., M. Thomsen, et al. (2004). Out of the frying pan: Invasion of exotic perennial grasses in coastal prairies. California Invasive Plant Council Symposium 2004. Ventura, 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.
  • Maher, E. and E. Stanton (2005). Blurring edges: A test of weed control methods used along edges of sage scrub patches to encourage shrub colonization into abandoned agricultural fields. California Invasive Plant Council Symposium 2005. Chico, CA.
  • Minnich, R. A. (1994). Effects of exotic plants on three California ecosystems. California Exotic Pest Plant Symposium '94. Sacramento, CA.
  • Minnich, R. A. (2004). California’s fading wildflower legacy. California Invasive Plant Council Symposium 2004. Ventura, CA.
  • Sanders, A. C. (1998). Invasive exotics in California: A perspective from inland Southern California. California Exotic Pest Plant Council Symposium '98. Ontario, CA.
  • Wills, R. (1993). The effects of fire on introduced annual grasses. California Exotic Pest Plant Symposium '93. Westlake Village, CA.

Other Avena barbata Information

  • CalPhotos - Images of plants taken mostly in California.
  • Calflora - See the distribution of this species on Calflora's map of California.
  • CalWeedMapper - Distribution information with ability to determine regional priorities.
  • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
  • USDA PLANTS Database - Federal database with information on identification and distribution, and links to websites in individual states.