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.

Cal-IPC Rating: Limited

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

  • 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.

Other Olea europaea 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.