The Habitat Restoration group does restoration on various parcels of land. Overall, we plan to fully restore 75 acres per year. Historically, we accomplish more than that. Through hands-on training, volunteers systematically remove weeds in a way that allows native vegetation to expand and re-vegetate open space areas. We follow the Bradley Method.

Recruitment only works where there is a residual native soil seed bank. There are places that have been disturbed in such a way that there is no native seed bank remaining. In these places planting is called for. While this is not our major focus, we do some plantings when resources permit and conditions dictate that approach. In that case, every effort is made to clear weeds prior to planting.

To get involved as a volunteer with the Habitat Restoration Committee please email Arne Johanson & Bob Byrnes at

Information Sources

Beautiful But Bad, Pretty Plant Pests - Article and photos by Jon P. Rebman, Curator of Botany, San Diego Natural History Museum.

California Invasive Pest Plant Council (Cal-IPC) - Based in Berkeley, the California Invasive Pest Plant Council (Cal-IPC) is dedicated to finding solutions to problems caused by non-native pest plants invading the state's natural areas. - This is a gateway to Federal and State activities and programs for all types of invasive species -- plants, animals, and other organisms (e.g., microbes such as the West Nile virus). 

The Los Angeles and San Gabriel Rivers Watershed Council's Invasive Plant Monitoring and Outreach Program

University of California Cooperative Extension County of San Diego, Regional Advisor on Invasive Plants - County based website providing more information on controlling invasive weeds, protecting agriculture and natural resources.

University of California Cooperative Extension Weed Research and Information Center (WeedRIC) - Housed on the UC Davis campus, the Weed Research and Information Center’s mission is to foster research in weed management and facilitate distribution of knowledge gained for the benefit of agriculture and the preservation of natural resources.