Acacia melanoxylon

Acacia melanoxylon_black acacia_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: blackwood acacia

Acacia melanoxylon (black acacia) is a tree (family Fabaceae) found along the coast of California, in the North and South Coast Ranges, and the San Francisco Bay region. It favors disturbed areas, and is often found near buildings and agricultural sites. Black acacia, which has spherical cream-colored flowers, was introduced as a landscape ornamental and has escaped cultivation in some areas. Black acacia trees can develop root suckers that grow to become large clonal populations. The trees also reproduce using seeds that are dispersed by water movement and human activities. To control mature trees, most root fragments must be removed to prevent resprouting.

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

    • Heath, M., K. Moore, et al. (2005). Trees and shrubs discussion group. California Invasive Plant Council Symposium 2005. Chico, CA.

    Cal-IPC News Articles

    • DiTomaso, J. (1998). Results of the CalEPPC questionnaire at Symposium '98 in Ontario.
    • (1993). California Exotic Pest Plant Council draft list exotic plants of greatest concern October 1993.