Rueda is a Spanish Denominación de Origen (DO) for wines located in the Community of Castile and León. It comprises 72 municipalities, of which 53 are in the province of Valladolid, 17 are in the north of the province of Segovia, and 2 are in the north of the province of Ávila. It is known primarily for its fine white wines based on the verdejo grape.
The main authorised white varieties are: Verdejo, Viura, Sauvignon blanc, while the authorised red varieties are Tempranillo, Cabernet Sauvignon, Merlot and Garnacha.
The authorised yield for white varieties is 8,000 kg/ha (10,000 kh/ha if on trellises) though in practice the yields are only between one quarter and one half of this level. Most new vineyards are planted with rows at 3 m intervals to allow mechanisation. Irrigation is only allowed under special circumstances. Vines are often trained close to the ground to resist the strong winds that are characteristic of the area.