Source: California Invasive Plant Council

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Euphorbia oblongata (oblong spurge)

Euphorbia oblongata
Euphorbia oblongata
Photo courtesy Bob Case

Euphorbia oblongata (oblong spurge) is an perennial forb/herb (family Euphorbiaceae) found sporadically in California. This plant may be toxic to humans. It is inedible to wildlife and inhibits the growth of surrounding plants.

Cal-IPC Inventory rating: Limited

Cal-IPC Resources on Euphorbia oblongata

  • California Invasive Plant Inventory 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 - Articles from our quarterly newsletter.
  • Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium. List of articles on Euphorbia oblongata.
  • Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species.
  • Cal-IPC News Articles

    • Case, B. (2011). Dangerous and invasive Euphorbias in California. Cal-IPC News. 18: 8, 9.

    Cal-IPC Symposium Proceedings

  • Tu, M. and J. M. Randall (2003). 2003 Cal-IPC red alert! New invasions, recent expansions, and a few others to be on the look-out For. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
    • Cooper, V. K. and B. J. Moritsch (1999). Weeding the wilderness: Non-native plant management at Point Reyes National Seashore. California Exotic Pest Plant Council Symposium '99. Sacramento, CA.

    Other Resources on Euphorbia oblongata

    • USDA PLANTS database - Federal database with information on identification and distribution, and links to websites in individual states.
    • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
    • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
    • Encycloweedia - Plants rated as noxious weeds by the California Department of Food and Agriculture.
    • CalPhotos - Images of plants taken mostly in California.