Martin Bournhonesque is famous among California chefs for growing the very best tasting produce in the Bay Area.  Farming since 1990 in the Salinas Valley south of San Francisco, he uses organic and ecologically friendly standards (though he isn't organically certified) in both his greenhouses and fields.  He grows a wide array of specialty varieties throughout most of the year.  Be sure to try his famed Broccoli di Cicco (a broccolini / broccoli raab like green) if you see it available.