Useful links of landscape, horticultural, and ecological interest:
Association of Professional Landscape Designers
www.apld.com
California Native Plant Society
www.cnps.org
CalFlora, native plant database
www.calflora.org
The Permaculture Activist magazine
www.permacultureactivist.net
California Rare Fruit Growers, the largest amateur fruit-growing organization in the world
www.crfg.org
California Horticultural Society
www.calhortsociety.org
California Society for Ecological Restoration
www.sercal.org