Petaluma Pie Company holds a Produce Swap at noon every Saturday and Sunday until the end of harvest season at its store in Helen Putnam Plaza, 125 Petaluma Blvd. Bring whatever your garden has grown too much of and swap with another gardener. It’s free.

Stay for music in the park, also sponsored by the pie company, with DJ/Piemaker Tywrex spinning electronic music 3 to 5 p.m. Saturday, Oct. 29, and guitarist Morgan Cochneuer playing 11:30 a.m.-12:30 p.m. every Sunday.

Info: 347-9743, www.swapproduce.com or www.petalumapie.com.