Montepulciano, the town in the southern Tuscan province of Siena, is not to be confused with Montepulciano, the red grape planted widely in Italy. Vino Nobile di Montepulciano wines are of the town and its surrounding hillsides, where some 2,594 acres of vineyards are planted. Vineyards in the DOCG range from 820 to 1,970 feet above sea level. Sangiovese is the principal grape of the appellation, where it is known by the name Prugnolo Gentile. Under DOCG rules, Vino Nobile must consist of at least 70 percent Sangiovese.