The Green Valley of Russian River Valley AVA is located on 19,000 acres in Sonoma County, California. The Green Valley of Russian River Valley received its AVA distinction in 1983. The area is known for its sandy and well-draining soil and low fertility, causing the grapes to develop slowly on the vine and retain balance and acidity. The region is a sub-appellation of the Russian River Valley AVA, and its close proximity to the Pacific Ocean breeze and fog make it one of the coolest appellations within Sonoma County. The cold climate in the Green Valley favors the cultivation of cool climate varietals like Pinot Noir, Chardonnay, and Riesling.