The Agricultural Commissioner's office leads the Weed Management Area (WMA) group in San Mateo County. The WMA is a regional coalition of agencies, private landowners, the agricultural industry, and environmental organizations concerned about the proliferation of non-desirable plant species in the county. The WMA promotes and coordinates efforts to prevent the introduction, establishment and spread of noxious weeds.

Arctotheca calendula Arctotheca calendula Chondrilla junacea Chondrilla juncea Cortaderia jubata Cortaderia jubata Stinkwort Dittrichia graveolens Canary Island St. John's Wort Hypericum canariense Sea Lavender Limonium ramosissimum Lythrum salicaria Lythrum salicaria Mexican Pokeweed Phytolacca heterotepala California Invasive Plant Council (Cal-IPC) Weed Research & Information Center Integrated Pest Management (IPM) Weed Workers Handbook Plant Right California Native Plant Society California Native Plants for Landscapes TechLine Invasive Plant News