California Department of Food and Agriculture.

A state exterior quarantine has been declared to prohibit the introduction of the spotted lanternfly (SLF), Lycorma delicatula, into California. Spotted lanternfly was first detected in North American in 2014 in Pennsylvania and has now spread to nine states. The quarantine prohibits the entry into California of SLF, its host plants, and a variety of articles, including conveyances, originating from any area where an SLF infestation exists.

If you believe you have seen the spotted lanternfly, please contact CDFA's Invasive Species Hotline at 1-800-491-1899, via Report a Pest, or by contacting your local County Agricultural Commissioner.

California Forest Pest Council.

California Invasive Plant Council.

California Invasive Plant Council.

Includes Prevention BMPs for Land Managers, Prevention BMPs for Transportation and Utility Corridors, BMPs for Protecting Wildlife When Using Herbicides, Land Manager’s Guide to Developing an Invasive Plant Management Plan, and Prevention BMPs for Central Sierra Tree Mortality Zones.

California Invasive Plant Council.

California Invasive Plant Council.

Provides information to educate the California horticultural community about invasive plants, including brochures offering landscaping alternatives for invasive plants still used as ornamentals, checklists to avoid invasive plants, planting guides, and other resources.

California Invasive Plant Council.

This white paper describes the strategic advantages of an EDRR approach, puts the need for such an approach in context, and provides a suite of recommendations for action at the statewide level for California.

California Invasive Plant Council.

Provides video recordings and presentations from the annual Cal-IPC Symposiums (1995-present).

California Invasive Plant Council.

Find recordings from past workshops, trainings, and online Symposia. Land management experts from across California share years of experience and best practices on topics such as prevention, mechanical control, herbicide control, and more. 

California Invasive Plant Council.

The 2025-2030 Strategic Plan outlines a bold vision focused on science-based conservation, empowering land stewards, and advocating for strong public policies to stop the spread of invasive plants. Provides a plan summary overview, as well as the full report for a detailed breakdown of their proposed steps to achieve this vision.

California Invasive Plant Council.

This interactive database contains information on the plants currently included in the Cal-IPC Invasive Plant Inventory. The Inventory categorizes plants as High, Moderate, or Limited, reflecting the level of each species' negative ecological impact in California. Includes options to search for species by region and by habitat type. The database provides a better view of information on each species and allows users to download the entire Inventory as a spreadsheet.

California Department of Fish and Wildlife.

The goals of the California Invasive Species Action Week (June 1-9, 2024),  are to increase public awareness of invasive species issues and promote public participation in the fight against California's invasive species and their impacts on our natural resources.

Prevention is the most effective strategy in managing invasive species. However, hundreds of invasive plants and animals have already established in California and are rapidly spreading each year. These invaders are negatively impacting our waters, our native plants and animals (some of them rare, threatened, or endangered), our agriculture, our health, our economy, and our favorite recreational places. Help us celebrate California's Invasive Species Action Week, and more importantly, help stop the spread of invasive species, by volunteering to take action.

Learn how invasive species are affecting California, with Invasive Species Action Week Lunchtime Talks. Webinars are part of California Invasive Species Action Week, organized by the California Department of Fish & Wildlife. Webinars were recorded and available for viewing.

Invasive Species Council of California.

Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab. National Exotic Marine and Estuarine Species Information System (NEMESIS).

Cal-NEMO provides comprehensive information on introduced marine and estuarine invertebrates and algae in California. The database contains everything from brief overviews of species and taxonomic groups to detailed records on the history of spread. The creation of NEMESIS and Cal-NEMO has involved years of research and literature review, and remains an ongoing project. Records are updated as new species are reported and new research is available.

California Oak Mortality Task Force.

See also: COMTF Newsletter

University of California. Agriculture and Natural Resources.

The University of California Statewide IPM Program (UC IPM) helps residents, growers, land managers, community leaders, and other professional pest managers prevent and solve pest problems with the least unintended impacts on people and their surroundings.

California Department of Health Services; California Department of Food and Agriculture; Mosquito and Vector Control Association of California; California Vectorborne Disease Surveillance System.

California Department of Fish and Wildlife.

California Department of Fish and Wildlife.

California Department of Fish and Wildlife.