 The soil in this area is a type of loam known as Hayne Silt-Loam which is heaviest in clay composition in the areas closest to the river but has more silt concentration in the higher elevations where most of the vineyards are now located.The Augusta AVA is planted with some "Vitis vinifera" including Cabernet Sauvignon, Pinot noir, Chardonnay, and Merlot as well the "Vitis aestivalis" grape Norton which is the official grape of the State of Missouri.French-American hybrid grapes like Chambourcin, Chardonel, Couderc noir, Rayon d'Or, Seyval blanc, St. Vincent and Vidal blanc are also popular plantings.