California Invasive Plant Council


Cal-IPC's mission is to protect California's lands and waters from ecologically-damaging invasive plants through science, education and policy.
Cal-IPC is a 501(c)(3) nonprofit organization governed by a board of directors who work with staff on programs and strategic direction.
Cal-IPC formed in 1992 to address one of California's top environmental threats. We work closely with agencies, industry and other nonprofit organizations. Our active membership includes public and private land managers, ecological consultants and researchers, planners, volunteer stewards, and concerned citizens. Allied invasive plant councils exist in many other states, though Cal-IPC has the largest membership.

Our Activities

  • Assessing impacts of invasive plants
    • Cal-IPC maintains the California Invasive Plant Inventory, a comprehensive list of invasive plants based on ecological impacts. Each plant is assessed using a transparent criteria system with documentation of sources.
  • Supporting restoration workers
    • Managing invasive plants is perhaps the single most important aspect of ecological restoration projects. Cal-IPC offers training through Wildland Weed Field Courses as well as detailed reference materials. Our quarterly Cal-IPC News keeps restoration workers current on the latest techniques.
  • Supporting research
    • Cal-IPC enhances dialogue between researchers and land managers on invasive plant biology, ecology and management. Our annual Symposium features three days of presentations, posters and field trips. Our Research Roundtable works to further define research needs.
  • Promoting public education
  • Advocating for policy initiatives
  • Reducing invasive plant introductions through horticulture
  • Supporting development of biological control agents
    • Biological control has significant potential for managing widely distributed weeds. Cal-IPC provides support for biocontrol research on Cape ivy and broom at the USDA Agricultural Research Service lab in Albany, CA.
  • Coordinating statewide weed mapping
    • Spatial data is vital for planning and monitoring weed management work. Cal-IPC helps coordinate the California Weed Data Consortium.
Mailing Address:

1442-A Walnut St. #462
Berkeley, CA 94709

Contact California Invasive Plant Council

Doug Johnson
Executive Director
2550 9th St. #201
Berkeley, California  94710
Phone: (510) 843-3902
Fax: (510) 217-3500


Service Area

Statewide service provider in:
  • California

Office Locaters

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