Château Haut-Brion devotes 48.35 hectares (119.5 acres) to red grape varieties, with a distribution of 45.4% Merlot, 43.9% Cabernet Sauvignon, 9.7% Cabernet Franc and 1% Petit Verdot, and 2.87 ha (7.1 acres) to white grape varieties, distributed with 52.6% Sémillon and 47.4% Sauvignon blanc.
The vineyards are elevated, up to 27 meters, somewhat above the Bordeaux norm. The soil consists of Günzian gravel and some parcels have high contents of clay. All the vineyards are located in a cluster near the château itself and on the other side of the main road.
The selection of optimum rootstocks and clones has been a large task at Château Haut-Brion, pioneered by Jean-Bernard Delmas, which has greatly contributed to the quality of the plant material in the vineyard. The long-term aim has been to lower yields, not by green-harvesting but by ensuring healthy and balanced vines. The average age of the vines is approximately 35 years with the oldest parcels dating back to the 1930s, planted with an average vine density of 8000 vines/ha.
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