Trefethen's primary estate vineyard is located in the heart of the Oak Knoll District of Napa Valley AVA. Their Cabernet Sauvignon is grown in the northwest quadrant of the vineyard, where the gravelly soils warm quickly in the spring, ensuring the fruit ripens fully while retaining its characteristic bright, complex character. In 1968, our family purchased seven farms surrounding a magnificent, but run-down, 19th-century winery in southern Napa Valley and created Trefethen Family Vineyards. At the time, there were fewer than 30 working wineries in Napa Valley. True to our original vision of creating a classic wine estate, we have never purchased a single outside grape. Instead, we lavish extraordinary care on our two sustainably farmed estate vineyards in the Oak Knoll District of Napa Valley. Controlling all viticultural practices allows us to produce grapes with pure, intense flavors beautifully reflecting our unique terroir. Appellation America:
Interview with Peter Luthi, longtime winemaker at Trefethen.