Chateau du Petit Thouars is located in the commune of Saint-Germain-sur-Vienne, in the southwest part of the Chinon appellation, along the south bank of the Vienne River, immediately east of Saumur-Champigny. In contrast to the sandy soils that predominate further east in the appellation, the vineyards around Petit Thouars are clay-limestone dominant which gives the wines impressive potential for structure and complexity (much like those from Saumur-Champigny). Sebastien and d’Arcy have been working toward fully organic viticulture, having eschewed the use of non-organic treatments except as an ultimate last resort.