Chateau Boswell is one of Napa Valley's first certified green wineries. It produces an estate Cabernet Sauvignon, True Course Chardonnay, Napa Valley Cabernet Sauvignon, Ritchie Vineyard Chardonnay, Dutton Ranch Rued Vineyard, Sebastopol Vineyard Chardonnay and Voyage Chardonnay, with limited production. It was founded by R. Thornton Boswell. Its winemaker is Russell Bevan.