Solano County, to the east of Napa county, has been involved in California viticulture dating back to the 1800’s. In the late 1800’s, Mangels Winery, located in what is now the Suisun Valley AVA, was one of the largest wineries in the United States, growing typical grapes of the period in head pruned vineyards. Carignane was highly popular along with Zinfandel and Napa Gamay.

The western portions of the county are directly influenced by the coastal climate and are part of the giant North Coast AVA, while the eastern edge of the county, adjacent to the Clarksburg AVA has been planted in post prohibition times to more production oriented vineyards serving wineries producing volume wines that typically carry California appellations. (Wine/Appellations)