AVA area in the Sonoma County (Region North Coast ) in California, It extends from the city of Healdsburg in the south to the foothills of the Mayacamas Mountains to the border with the Mendocino County in the North. In 1986, a new definition of borders, which resulted in part in an overlap with the AVA area Russian River. The valley has a length of almost 14 kilometers, and a width of almost two to almost five kilometers. The history of viticulture goes back to the time of the gold rush. The valley was named after Cyrus Alexander (1805-1872), who came from San Diego in 1840 to find suitable ranch land. He eventually identified an area of nearly 20,000 hectares, which was then bought by the Mexican government. As compensation, he got land in the size of 3,600 hectares.
There he laid in 1846 near Healdsburg the first vineyard and an orchard. As the first leader of the community, he built a school and founded three churches. In the center of his former estate there is today the winery Alexander Valley Vineyards, which produces a red wine "Cyrus" in honor of the pioneer Alexander. The Alexander Valley is about 30,000 hectares, of which are cultivated on 5,600 hectares of vines. Sandy clay dominates the valley floor and gravelly volcanic rock on the mountain slopes. It cultivates about 30 grape varieties, the most important being Barbera, Cabernet Sauvignon, Cabernet Franc, Chardonnay, Gewurztraminer, JR (Riesling), Malbec (Cot), Merlot, Nebbiolo, Petite Sirah (Durif), Sangiovese, Syrah, Sauvignon Blanc, Viognier and Zinfandel. There are 30 wineries and around 250 grape farmers. Well-known producers are Clos du Bois. Gallo. Iron Horse. Jordan. Kendall-Jackson. Ravenswood and Simi Winery,