Hypochaeris radicata

Hypochaeris radicata_common catsear_flower_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: rough cat's-ear; false dandelion

Hypochaeris radicata (rough catsear, hairy dandelion) is an annual herb/forb (family Asteraceae) and a weed of lawns, pastures, and waste areas. The seeds are wind blown and can rapidly invade disturbed areas.

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

    • 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.

    Cal-IPC News Articles

    • Young, S. L. (2002). Exploring alternative methods for vegetation control and maintenance along roadsides. CalEPPC News. 10: 5-7.