Since its inception 14 years ago, the Petaluma Art & Garden Festival has blossomed from a simple street fair to an extravaganza that features 145 local vendors, live entertainment and family-fun activities. This year, the festival boasts the debut performance from a musical super-group with North Bay roots, Following Ghosts, which features Bay Area songwriter Miles Schon (son of Journey’s Neil Schon), drummer Danny Thompson (Alan Parsons Project) and Novato native Michael Kelly (Blue Man Group). Petaluma’s Saffell, Bobby Jo Valentine and others will also be on hand when the Petaluma Art & Garden Festival takes to the streets on Sunday, July 12, at Kentucky and Fourth streets, Petaluma. 11am. Free. Petalumadowntown.com.