Asphodelus fistulosus

Asphodelus fistulosus_Onionweed_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Synonyms: Asphodelus tenuifolius Cav.

Common names: onion weed; asphodel; hollow stemmed asphodel; wild onion

Asphodelus fistulosus (onionweed) is an annual/perennial herb (family Liliaceae) found in dry, sandy and rocky places, as well as pastures, roadsides and waste places. Livestock avoid eating it, allowing it to create dense stands that crowd out more desirable forage species in pastures. It is primarily found along coastal regions of southern California.

Rating: Moderate

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

    • DiTomaso, J. M. (2004). 2004 Cal-IPC Red Alert! New invasions, recent expansions, and a few others to be on the look-out for. 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.

    Cal-IPC News Articles

    • None for this species.