Normally I wouldn't mention info intended for tourists, but today I happened upon a brochure from the county tourist board that is remarkably wide ranging. The 'fruit trail' list of about three dozen locations shows many places I've never heard of that sell various agricultural products. The brochure also lists local festivals, farmers markets and cultural centers.
I haven't verified that all of the info is present on the web site, but the Fruit Trail list is here:
If any places are especially chow worthy, please post!