It is likely that Roussanne originated in the northern Rhône where it is today an important component in the wines of Crozes-Hermitage, Hermitage, Saint-Joseph and the Saint-Péray AOC where it is used for both still and sparkling wine production. In recent years plantings of Roussanne have declined as Marsanne gains more of a foothold in the northern Rhône due to its high productivity and ease of cultivation. In the southern Rhône, Roussanne is a primary component in the white wines of Châteauneuf-du-Pape where it can comprise as much as 80–100% of the wine. It can also be found in some white wines from the Côtes du Rhône AOC. Outside of the Rhône, the Roussanne is grown in Provence and the Languedoc-Roussillon région where it is sometimes blended with Chardonnay, Marsanne and Vermentino in some "vin de pays". In Savoie, the grape is known as Bergeron where it produces highly aromatic wines in Chignin.