Rubus armeniacus

Rubus armeniacus_Hilamalaya blackberry_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Synonyms: Rubus discolor Weihe & Nees., Rubus procerus Muller, Rubus grabowskii Weihe ex Gunther et al., Rubus praecox Bertol.

Common names: Himalayan blackberry

Rubus armeniacus (Himalayan blackberry), formerly known as Rubus discolor, is a sprawling, essentially evergreen, glandless, robust shrub (family Rosaceae). Rubus armeniacus occurs in California in the coast ranges, Central Valley, and Sierra Nevada. This weed is a strong competitor. It rapidly displaces native plant species and thickets to produce such a dense canopy that the lack of light severely limits the growth of understory plants.

Rating: High

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

  • Jones, L. J. and M. Hutten (2010). Trials of aminopyralid and a cut-and-dab method for Himalayan blackberry control. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council.
  • Pacini, N. (2008). Mechanical control coupled with native species planting as a cost-effective method of controlling Himalayan blackberry. California Invasive Plant Council Symposium 2008, California Invasive Plant Council.
  • Rogner, M. (2008). A four-step approach to Himalayan blackberry (Rubus discolor) removal. California Invasive Plant Council Symposium 2008. Chico, CA, California Invasive Plant Council.
  • Clark, L. and M. Jasieniuk (2008). Hybridization between invasive and native blackberries (Rubus) in California. California Invasive Plant Council Symposium 2008. Chico, CA, California Invasive Plant Council.
  • DiTomaso, J. M. (1997). Risk analysis of various weed control methods. California Exotic Pest Plant Council Symposium '97. Concord, CA.
  • Jackson, N. E. (1996). Control of exotic weeds with Roundup herbicide: A survey of projects around the world. California Exotic Pest Plant Council Symposium. San Diego, CA.

Cal-IPC News Articles

  • Marovich, R. (2009). A new invasive raspberry? Cal-IPC News. 17: 99.
  • Schneider, H. (2009). Cal-IPC Student Chapter continues to grow. Cal-IPC News. 17: 8.
  • Schwartz, S. (2009). East Bay volunteers head to the hills and the shores. Cal-IPC News. 16: 8-9.
  • (1993). California Exotic Pest Plant Council draft list exotic plants of greatest concern October 1993. CalEPPC News. 1: 6.
  • (1994). Exotic pest plants of greatest ecological concern in California September 1994. CalEPPC News. 2: 10.
  • (1999). Richmond weed abatement ordinance. CalEPPC News. 7: 10.
  • DiTomaso, J. (1998). Results of the CalEPPC questionnaire at Symposium '98 in Ontario. CalEPPC News. 6: 4.
  • Richardson, B. (2004). Rubus armeniacus. Cal-IPC News. 12: 7.