Barossa Valley (wine) Barossa Valley is most commonly associated with its signature grape variety of Shiraz, the region does grow a number of grape varieties. Among these other varieties are Riesling, Semillon, Chardonnay, Grenache, Mourvedre and Cabernet Sauvignon. The popularity of Syrah has sparked interest in the development of other Rhone varieties, with increase production of Grenache and Mourvedre (also known as Mataro in Australia) for both blending and varietal bottlings. Many of these vines are remnants of the Barossa's fortified wine history and such have substantial age themselves. Despite its reputation as a red wine region, the Barossa Valley does produce a
Syrah departments of Southern of France, but is now widespread. It is believed to be caused by mismatch between the rootstock and scion rather than an infection by a fungus or a virus. In Spain there was an increase in the area cultivated in Syrah grapes from in 1990 to in 2009. The Syrah grape was introduced into Switzerland in 1926 and in 2009 was the 6th most common red wine grape in Switzerland (181 hectares). Mostly grown in Valais, along the upper Rhône valley above Lake Geneva, it produces "unexpectedly concentrated wine from mature vines". The Syrah grape was introduced