There is a free farm stand every Sunday at 23rd & Treat. in San Francisco.
Fresh produce is donated by local farmers from Noon - 1pm.
It has been happening in the Mission for years!!!
All are warmly invited to join, or volunteer.
Line begins 20 minutes before.
Stay Safe. See details on their website:
It’s now at 12pm every Sunday.
Line starts forming about 20 minutes before noon
Thank you, this post is now a wiki-post anyone may edit and update.
Added! Also, turned this into a recurring weekly event so the info should stay up-to-date. 
Thanks. Unfortunately it says ‘Current user not allowed to edit’.
I was trying to modify it to 12-1pm
"Fresh produce is donated by local urban community gardening volunteer farmers and local organic grocers from Noon - 1pm.