Château d'Armailhac is a wine estate in the Pauillac appellation of the Médoc. As Mouton d'Armailhacq it was ranked as a fifth growth in the 1855 Bordeaux Classification. The vineyard is located to the south of the village of le Pouyalet, immediately next to Mouton Rothschild and nearby Pontet-Canet. It covers 172 acres (70 hectares) and is planted with 52 percent Cabernet Sauvignon, 36 percent Merlot, 10 percent Cabernet Franc and 2 percent Petit Verdot. Grapes are fermented in 23 gravity-fed stainless steel vats, sized according to different parcels in the vineyard. The wine is aged for 18 months in oak; one-third new, one-third in one year old and one-third in two-year-old barrels.