Crisscrossed by rivers, dotted with lakes, and including every type of soil a grapevine is capable of growing in, Aargau is the 4th largest German-speaking Swiss wine region.
The region is subdivided into three wine zones. The better-known wines from Klingnau, Doettingen, Tegerfelden, Wuerenlingen and Ennetbaden, are in the northeastern zone, in the Lower Aare and Limmat valleys.
The other two zones are the northwestern wine zone, between Rheinfelden and Aarau, and the Southeastern zone between the Aare and Limmat rivers.
Roughly 70% of wine production in Aargau is red wine. The main grape here is Blauburgunder (Pinot noir). Also planted are Léon Millot, Dornfelder, Regent, and Gamay x Reichensteiner (Garanoir).
The white wine is mostly from Riesling x Sylvaner, followed by Pinot gris, Räuschling, Chardonnay, Sauvignon blanc, Charmont, Gewürztraminer, and Kerner.