Olea europaea

Olea europaea_Olive_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: olive

Olea europaea (olive) is a shrub or tree (family Oleaceae) that can produce hundreds of seeds that are spread by birds and mammals. Though commonly grown as a crop in California, gardeners should use caution planting olives near open space. It has invaded areas in southern California and the Central Valley.

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

    • Power, P., J. R. Roberts, et al. (2010). Controlling the Invasive Offspring of Historic Olive Trees on Santa Cruz Island, Channel Islands National Park Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council
    • Chaney, S. (2005). Balancing act: Managing non-native plants of historic landscapes within the natural landscapes of Channel Islands National Park. California Invasive Plant Council Symposium 2005. Chico, CA.
    • Roberts, J. R., S. Chaney, et al. (2005). Management of domestic olives on Santa Cruz Island in the Channel Islands National Park: Preventing development of an olive-dominated chaparral. California Invasive Plant Council Symposium 2005. Chico, CA.
    • Connick, S. and M. Gerel (2004). Partnering to prevent invasions of plants of horticultural origin. California Invasive Plant Council Symposium 2004. Ventura, CA.
    • Bell, C. E. and C. Bell (2003). Killing olive (Olea europea) root sprouts with Imazapyr and Glyphosate. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
    • Hunter, J. C., J. C. Sterling, et al. (2003). The abundance and distribution of non-native woody species in Sacramento Valley riparian zones. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
    • Kelly, M. (1998). SWAT: Special weed action teams as abassadors for education and energy. California Exotic Pest Plant Council '98 Symposium. Ontario, CA.

    Cal-IPC News Articles

    • Connick, S. and M. Gerel (2005). Don't sell a pest: A new partnership to prevent plant invasions through horticulture. Cal-IPC News. 13: 4-5,14.