Diane Matthew, who farms Mt. Barnabe Farm in Lagunitas, is advocating for the conversion of part of the former San Geronimo Valley Golf Course to farmland.   David Briggs

An effort has sprouted in the San Geronimo Valley to convert part of the bygone golf course’s 157-acre property into farmland, returning the property to its agricultural roots, regenerating soil stripped by pesticide use and providing mentorship opportunities to young farmers. 

A committee of agriculture and sustainability advocates, largely from the valley, has devised . . .