Padre azul is grown in the valleys. The earth has more alkaline and less PH, contains less iron and more basalt as opposed to the highlands. Because of the arid temperatures of the area, the agave is much dryer and has more fiber. There are volcanic soils in the valleys. The water quality in the valleys is better than standard wells, which adds a unique flavor specific to the region. That’s why the valley agave develop citrus and earthy aromas.