Arctotheca calendulaArctotheca calendula Chondrilla junaceaChondrilla juncea Cortaderia jubataCortaderia jubata StinkwortDittrichia graveolens Canary Island St. John's WortHypericum canariense Lythrum salicariaLythrum salicaria

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.

Please check out the following links for more weed information and alternative landscaping choices:

California Invasive Plant Council

Weed Research & Information Center

Integrated Pest Management

Weed Workers Handbook

Plant Right

California Native Plant Society

California Native Plants for Landscapes

TechLine Invasive Plant News