It is the second province producer and their vitivinicultura it is developed mainly in the Valley of the Tullum and, in smaller proportion, in the valleys of Zonda and Ullum, to both sides of the river San Juan .

The climate of the province is very dry and for the watering of the vineyards water of the rivers is used San Juan and Jáchal.

Other vineyards are located in higher valleys, as Calingasta, Íglesias and Jáchal, to 1.165 meters on the level of the sea.

The floors along the left side of the river San Juan is stony, with clay and sand, what enables them for the cultivation of the vine. Of the right margin, the floors are more fertile, sandy and not very deep.

San Juan's province is known historically as strong producer of white wines of table, wines generous type sherry-port wine, and until having distilled type cognac, but in the last half a decade it enlarged its action field and it developed a viticultura and a worthy enology of keeping in mind.

A young generation of viñateros and grocers rushed desprejuiciadamente to the long task of making good fine wines, even red wines that are being of a force and unexpected quality.

The intelligent handling and professional of lands and watering, cocktail with selected sprouts of the most adaptive varietales to the "terroir" of San Juan 's valleys, he/she is giving their fruits, visible commercially, so much in the internal market as in the international one.

San Juan has a long tradition like the better producing of table grapes and raisins of the Argentina and of there an excellent knowledge of the agrarian handling of the cultivations comes.

The intrinsic natural sanity, virgin lands or little exploded and the absence of the hail guarantees a base important producer.

The varietal that is profiled as leader in the elaboration of wines fine tintos is the Syrah, accompanied by the Bonarda and possibly the Barbera.

Cellars of long tradition and high technology like Graffigna and Peñaflor have piloteado the development so much technical as commercial, followed today, in day for coquettish cellars boutique and advanced viñateros that make elaborate their grapes, but with own control, in cellars of third.

The main production areas are in the valleys of Tulum, of the Zonda and of Ullum, located to the south of the province, with the provincial capital located more or less to the center of these.