Source: California Invasive Plant Council

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Mission and History

Activities | History


Boy Scouts remove a humongous wild radish (Raphanus sativus) at the Presidio, San Francisco
Boy Scouts remove a 'humongous' wild radish (Raphanus sativus) at the Presidio in San Francisco
Photo courtesy Mike Perlmutter

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.

Promoting public education

To increase public awareness of invasive plants, Cal-IPC develops outreach materials and presentations.

Advocating for policy initiatives

Public policy provides significant opportunity for advancing our capacity to manage invasive plants. Cal-IPC pursues improvement of invasive plant policy through advocacy events and grassroots organizing, often working with other groups through the California Invasive Weeds Awareness Coalition (CALIWAC).

Reducing invasive plant introductions through horticulture

Cal-IPC works with nurseries and gardeners to address this major pathway for introduction of invasive plants. Our Don't Plant a Pest! brochures suggests safe landscaping alternatives. We work with nursery and landscape trade organizationsas part of the PlantRight campaign to develop voluntary industry measures.

Coordinating statewide weed mapping

Spatial data is vital for planning and monitoring weed management work. View statewide maps on CalWeedMapper.