At the top of Sonoma County sits around 15,000 acres of prized vineyards. Within a total of 76,000 total acres, Alexander Valley has a variety of microclimates, which can support a magnificent range of grape varieties. On the gravelly terrain of the valley’s floor, Cabernet Sauvignon reigns supreme, as well as producing laudable Chardonnay, Zinfandel, Merlot, and Sauvignon Blanc. Because enough coastal fog finds its way up the Russian River creating cool evening and morning conditions, Gewürztraminer and Riesling, have found a niche in the shadow of Mendocino. Overall the area is a warm growing area.