This publication quantifies the current size and growth of the organic industry in California in terms of acres, farm gate sales and number of growers statewide and by commodity, commodity group, county, and region, based on California Department of Agriculture registration data from 2009 to 2012.
See PDF here: Statistical Review of California’s Organic Agriculture 2009-2012 by Karen Klonsky, Brian D. Healy, October 2013.