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 calendulaArctotheca calendula Chondrilla junaceaChondrilla juncea Cortaderia jubataCortaderia jubata StinkwortDittrichia graveolens Canary Island St. John's WortHypericum canariense Sea LavenderLimonium ramosissimum Lythrum salicariaLythrum salicaria Mexican PokeweedPhytolacca 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