Source: California Invasive Plant Council

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Invasive Plant Inventory - 2017 Update

Cal-IPC is undertaking a periodic update of its California Invasive Plant Inventory. All stakeholders are encouraged to comment on the process. The initial 60-day public comment period is March 8 through May 8. The project team will post responses to comments received, and a second public comment period will be held for any plant species whose categorization changes based on input received during the first comment period.

The update comprises two proposed additions. First, addition of 10 plant species based on assessment of current impact, invasiveness and distribution using the Plant Assessment Form (PAF) protocol established by Cal-IPC and partners in 2003. Second, addition of 87 plant species as "high-risk potential invasives" based on the predictive assessment protocol developed by UC Davis and the University of Washington.

View PAFs for 10 plant species proposed for addition based on current impacts in California.

View predictive assessments for 87 plant species proposed for addition based on risk of becoming invasive in California.

Submit comments to project lead Ramona Robison by May 8.

See list of proposed additions.

The project team will review all comments and make adjustments as appropriate. Any significant changes (such as recategorization of a plant) will then be released for a subsequent public review period of 30 days, after which the revised Inventory will be finalized.

Project Team

Project Leads:

  • Dr. Ramona Robison, Science Program Manager, Cal-IPC
  • Dr. Elizabeth Brusati, Sr. Environmental Scientist, California Dept. of Fish & Wildlife (formerly Senior Scientist, Cal-IPC)
  • Doug Johnson, Executive Director, Cal-IPC

Technical Advisors:

  • Giselle Block, Biologist, US Fish & Wildlife Service
  • Dr. Jutta Burger, Science & Stewardship Director, Irvine Ranch Conservancy
  • Barbara Castro, Environmental Scientist, California Department of Water Resources
  • Gina Darin, Senior Environmental Scientist, California Department of Water Resources
  • Dr. Holly Forbes, Curator, University of California Botanical Garden at Berkeley
  • Dr. Naomi Fraga, Director of Conservation Programs, Rancho Santa Ana Botanic Garden
  • Tim Hyland, Resource Ecologist, California State Parks, Santa Cruz District
  • Dr. Irina Irvine, Restoration Ecologist, Santa Monica Mountains Natural Recreation Area
  • Dr. Denise Knapp, Director of Conservation and Research, Santa Barbara Botanic Garden
  • John Knapp, California Islands Ecologist, The Nature Conservancy
  • Dr. Chris McDonald, Natural Resources Advisor, University of California Cooperative Extension
  • Dr. Lynn Sweet, Plant Ecologist, U.C. Riverside Center for Conservation Biology
  • Ron Vanderhoff, General Manager and Vice President, Roger's Gardens
  • Dr. Kristina Wolf, U.C. Davis, Agricultural Sustainability Institute
  • Eric Wrubel, Botanist, National Park Service, San Francisco Bay Area Network

Additional Technical Consultants:

  • Dr. Joseph DiTomaso, Department Chair, U.C. Davis, Department of Plant Sciences
  • Dr. Dean Kelch, Primary Botanist, California Department of Food and Agriculture
  • Christiana Conser, PhD student, U.C. Davis, Department of Plant Sciences

Partial funding for this project comes from the USDA Forest Service, State and Private Forestry. In accordance with Federal law and U.S. Department of Agriculture policy, this institution is prohibited from discriminating on the basis of race, color, national origin, sex, age or disability. (Not all prohibited bases apply to all programs.) To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 1400 Independence Avenue, SW, Washington DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer.