Ahlgren Vineyard is a vineyard and winery located in the Santa Cruz Mountains AVA, in Boulder Creek, California, United States. Founded in 1976 by Dexter and Valerie Ahlgren, they produce 2,500-3,000 cases a year. The winery is located in the cellar of the Ahlgren's home. Ahlgren Vineyard uses hands on, traditional methods of winemaking to create wine varietals including Sémillon, Chardonnay, Cabernet Sauvignon, Merlot, Cabernet Franc, Zinfandel, Nebbiolo, Pinot noir, and Syrah. Their grapes come from Santa Cruz Mountains, Livermoore Valley, and Monterey. In 2000 Dexter Ahlgren suffered from a stroke, and the couples daughter, Beth Algren, took over as winemaker. Dexter recovered enough to allow him to take part in the winemaking process.