Back in the old days (20 years ago when we live in SoCal) produce in grocery stores was picked before it was ripe, bulk shipped to Texas, the processed and packaged and shipped around the country, including back to CA. So all the stuff in the grocery stores was sub-par and we always shopped at farmers markets.
At least according to the farmers. I don't know if that was true then and if it is true today. All I know is local produce at stores was terrible compared to farmers markets back then.
If someone can check an Ald's in CA it will have a label that lists all the ingredients and probably a Prop 65 warning too.