Home Water Works: Irrigation
A guide for efficient landscape irrigation.
http://www.home-water-works.org/landscape-irrigation/irrigation

Weeding Wild Suburbia: Gardening Resources
A guide for gardening with native plants.
http://www.weedingwildsuburbia.com/gardening-resources/how-to/

California Native Plant Society – San Gabriel Mountains Chapter
Hikes, workshops, and other native plant related activities.
http://www.cnps-sgm.org/

Rancho Santa Ana Botanic Garden
The largest botanic garden dedicated to California native plants.
http://www.rsabg.org/

Theodore Payne Foundation for Wild Flowers and Native Plants
An organization dedicated to the understanding, preservation, and use of California native flora.
http://theodorepayne.org/

California Chaparral Institute
A source of information about fire and native shrubland communities in California. Richard Halsey, Director, is a well-known chaparral ecologist, writer and speaker.
http://www.californiachaparral.org/about.html

Rincon-Vitova Insectaries
A resource for biological control with natural enemies.
http://www.rinconvitova.com/