Chateau La Tour de By is one of the largest estates in the Medoc comprising some 109 hectares of vineyards with an average vine age of 45 years old. The vineyards are planted with 60% Cabernet Sauvignon, 35% Merlot and 5% Petit Verdot. There are two main vineyard sites – 65 hectares at Begadan situated 200 metres from the Gironde on gravelly soils and 44 hectares at St Chistoly on gravel, clay and limestone soils. The grapes for the grand vin are principally from the Begadan vineyards.
Chateau La Tour de By 2015 is a blend of Cabernet Sauvignon (60%), Merlot (35%) et Petit Verdot (5%) aged for 12 months in French oak barrels.