Vince and Vicki Bernard grow avocados and citrus on 50 acres in Riverside County, CA. They've been farming since 1984. They fertilize with seaweed and urea, use drip irrigation in their groves, and, instead of using synthetic pesticides, they use beneficial insects and manual trapping of gophers. Their manual weeding is a time-intensive process, but allows them to avoid the use of chemical-intensive, synthetic herbicides.
You can also find Bernard Ranches and their delicious fruit at CUESA's Ferry Plaza Farmers Market