In the Medford Mailtribune they have a great Wine Map and information in invididual wine tasting venues. Check out this link
Southern Oregon wine making dates back to 1852 with Peter Britt, who first planted grapes and operated a winery in Jacksonville. Today Southern Oregon’s rugged mountain valleys and diverse climates allow for a wide variety of intensely flavored wine grapes to be grown. The varied hillsides and valleys with their microclimates enable both cool- and warm-climate varietals. In some areas pinot noir, pinot gris, riesling, sauvignon blanc, chardonnay, and gewürztraminer thrive, while the hot summers ripen big reds such as cabernet sauvignon, cabernet franc, tempranillo, merlot, malbec, dolcetto, zinfandel, grenache and syrah. In addition to albarino, pinot blanc, gruner veltliner, marsanne, rousanne, baco noir, marachel foch, mourvedre, semillon, petite sirah and viognier.