I just found this out from the Produce manager at Woodmans West, my “local” supermarket: Explaining to me that it would be really difficult to put signs up telling us what produce might be from a local farm – the main reason being that this week lettuce be local, next week it might have come from California (because nearby farms didn’t have enough supply) – but, he said, you can tell what we’ve bought from local farms:
Look for the banana boxes!
Local farmers use old banana boxes (supplied by Woodmans) to pack their produce in. So if there are tomatoes in a banana box, they’re local. If they are in a tomato box, probably not.
Your store might be different – so the general priniciple could be, If the box doesn’t match the contents, rejoice! You are probably buying from a small local supplier.
Hope this helps. Let me know!