Depending on the market's rules, farmer's market vendors are buying their produce from the same place the grocery stores are: https://www.cbc.ca/news/business/

Depending on the market's rules, farmer's market vendors are buying their produce from the same place the grocery stores are: https://www.cbc.ca/news/business/farmers-markets-lies-marketplace-1.4306231 https://www.cbc.ca/news/business/farmers-markets-lies-market... https://www.houstonchronicle.com/local/gray-matters/article/You-bought-it-at-the-farmer-s-market-But-was-it-6270722.php https://www.houstonchronicle.com/local/gray-matters/article/... Although it looks like some of the Bay Area markets might be Producer Markets? List of "Certified Farmer's Markets" https://www.cdfa.ca.gov/is/i_&_c/cfm.html https://www.cdfa.ca.gov/is/i_&_c/cfm.html