Pétrus is a Bordeaux, France, wine estate located in the Pomerol appellation near its eastern border to Saint-Émilion. A small estate of just 11.4 hectares (28 acres), it produces a red wine entirely from Merlot grapes (since the end of 2010), and produces no second wine. The estate belongs to Jean-François Moueix and his children. The vineyard of Pétrus covers 11.4 hectares (28 acres) and is located on a plateau in the eastern portion of Pomerol. Located on top of a 20-hectare (49-acre) island mound, the Pétrus boutonnière or buttonhole, Pétrus' original vineyard possesses topsoil and subsoil high in iron-rich clay that differs from neighbouring vineyards, where the soil is a mixture of gravel-sand or clay-sand.