Roussanne is one of the most important white grape varieties in the Rhône Valley. It is a particularly pernickety grape to cultivate being a notoriously low yielder as well as being highly susceptible to rot. It is difficult to ripen, and seemingly prone to oxidation at every opportunity. Roussanne's name comes from its russet-coloured skin and it produces richly aromatic wines, often with fruit characteristics of lime and blossom.
In the northern Rhône it is typically blended with Marsanne to produce the white wines of Hermitage, Crozes-Hermitage, St-Joseph, and St-Péray. Generally Marsanne is the dominant partner and it lends colour, body and weight to the blend, as well as richly scented fruit, while Roussanne contributes bouquet, delicacy and finesse.
It is grown less extensively in the southern Rhône although it is one of the permitted varieties in Châteauneuf-du-Pape. There are plantings of Roussanne in the Languedoc and Rousillon and in the last decade the grape have been cultivated with particular success in California, where it is produced both as a single varietal and as a component of Rhône-style blends.