The production area is located in the federal state of Baden-Württemberg in Germany. The vineyards cover 11,461 hectares of vines, which extend between Lake Constance and the Tauber valley below Rothenburg (Taubergrund). The geographical and climatic conditions are characterised by many river valleys. On its very winding course, the tributaries Rems, Enz, Kocher and Jagst flow towards the Neckar. On the river banks there are many southern slopes with widely spread vineyards. In summer there is enough sunshine to give strength and colour to red wines as well. Two thirds of the vineyards are steep or sloping. Heilbronn is the wine capital of Württemberg and to a certain extent also of Germany, as the DLG (German Agricultural Society) competition is held here every year. Weinsberg is home to a training and experimental institute for vine breeding, where August Herold (1902-1973) created some successful new varieties such as Dornfelder, Cabernet Cubin, Cabernet Dorio and Cabernet Dorsa.