Meet classic car owners today and the last Sunday of each month through October noon to 3 p.m. for a free Cruise In at the Fourth and Sea Restaurant, on the corner of Fourth and C streets. Car clubs Bay Area Igniters from San Mateo and Pacific Empire Corvettes of Petaluma will be there for drive-in food, live music and a raffle. More info: 623-3219 or SundayCruiseIn.com.

Get a lesson in fall and winter garden management today 1-3 p.m. from Wendy Krupnick, teacher of sustainable agriculture at Santa Rosa Junior College. The class takes place at Petaluma Bounty Community Farm, 55 Shasta Ave. For $20, learn how to harvest vegetables year round by selecting the correct crops and studying soil management. Reserve a spot at 776-0805 or workshops@petalumabounty.org.

The Woman’s Cancer Awareness Group will host “Teal Impact” Friday 11:30 a.m.-12:30 p.m. at the Petaluma Art Center, 230 Lakeville St. Taiko Drummers will perform, and Dr. Lee May Chen of UCSF will be guest speaker. Learn more about ovarian cancer, and wear teal to match the yarn art made by local cancer survivors. It’s free, with no RSVP required. More info: Lydia Zipp at 769-8325 or WCAGroup.net.

Every Saturday through October, the Petaluma Historical Library and Museum will offer free docent led walking tours of historic downtown Petaluma. Meet at 10:30 a.m. on the steps of the museum, 20 Fourth St., to learn the stories of Petaluma’s early settlers. Call 778-4398 before attending, as tours are canceled during major downtown events.

See the work of three local artists through Oct. 2 in a new exhibit at Gallery One, 209 Western Ave. It’s open daily 11 a.m.-5:30 p.m., and Sundays 11 a.m.-4 p.m. The work includes pastels from the “Light on the Land” series by Clark Mitchell of Cotati as well as pieces by Laura Culver of Terra Linda and Judy Klausenstock of Tiburon. More information is available at 778-8277 or PetalumaGalleryOne.com.