Barnard Griffin produces wines from Columbia Valley in Washington, a region defined by its continental climate and deep alluvial soils. The winery's portfolio spans both classical Bordeaux blends and more experimental compositions. The Sagemoor Vineyards Partners Reserve—a blend of Merlot, Cabernet Sauvignon, Petit Verdot, and Cabernet Franc—demonstrates the region's capacity for structured, age-worthy reds. Mammoth IV, a seven-varietal blend anchored by Tempranillo and Cabernet Sauvignon with Counoise, Petit Verdot, Malbec, Touriga Nacional, and Souzao, reflects a willingness to explore beyond convention. The winery also produces Orange Muscat, a varietal expression of this aromatic, lower-alcohol grape. Wines from Barnard Griffin have been assessed by Wine Advocate, Wine Enthusiast, Falstaff, Wine Spectator, and Decanter.