SAN MARTIN, CALIFORNIA | The small towns along Highway 101 south of San Jose, Calif., are noted for their produce. Gilroy for its aromatic fields of garlic, Castroville for its acres of artichokes and Morgan Hill, which is so replete with portabellas and shittakes that it hosts the annual Mushroom Mardi Gras to celebrate its harvest. But that area has never meant much to golfers, and anyone looking for first-rate courses simply keeps driving, to Pebble Beach 45 minutes down the road. Anyone, that is, who does not know about CordeValle. CordeValle is a sumptuous retreat in the foothills of the Santa Cruz Mountains, part private club catering mostly to the Silicon Valley’s Internet aristocracy and part luxury resort with 45 guest rooms. Opened in 1999, its centerpiece is a Robert Trent Jones Jr. golf course that increasingly is being used as a venue for prominent golf tournaments. For example, CordeValle recently hosted the U.S. Senior Women’s Amateur as well as the PGA Tour’s Frys.com Open for the fourth year in a row. The track will also be the site for the U.S. Women’s Open in 2016.