Château Blaignan is a beautiful estate of 97 hectares whose vines, with an average age of 25 years, are made up of 50% Cabernet Sauvignon, 41% Merlot and 9% Cabernet Franc. Locatedin the north of the Médoc, where vines have been present since the 14th century, itslong history is marked by Pierre Merman who acquired the estate at the end of the 18th century and by his family who succeeded him and who considerably developed the vineyard. In 1932, Château Blaignan became a renowned Cru Bourgeois.

Since 2004, Château Blaignan has been owned by CA Grands Crus, a subsidiary of the Crédit Agricole Group, which is carrying out a vineyard optimisation plan (CA Grands Crus also owns Château de Rayne Vigneau, Grand Cru Classé de Sauternes, Château Grand-Puy Ducasse, Grand Cru Classé de Pauillac and Château Meyney in Saint-Estèphe).