The 6th and B Community Garden was rocking at its recent ’60s sing-along party / fundraiser. The mini-Woodstock — thankfully, without the rain and mud — hosted a sea of tie-dyed clothing, accented by gray hair, long beards and peace and love. The group X-Tine and the City Timbres led the crowd through classic faves, like the Beatles’ “Can’t Buy Me Love,” the Turtles’ “Happy Together” and the Jefferson Airplane’s “White Rabbit.” Above, gardeners got their groove on.