The 150-acre Stuhlmuller Vineyard is located in northern Sonoma County, where the Alexander, Dry Creek, and Russian River valleys come together. With vines planted at the convergence of these three, highly regarded Sonoma appellations, Stuhlmuller Vineyards occupies a unique place in the county’s viticulture. Located at the southwestern edge of the Alexander Valley, along the banks of the Russian River, Stuhlmuller Vineyards possesses gravel, clay, and volcanic soils. The geology of this terrain was formed during thousands of years of alluvial fan movement and flooding. Today, these ancient soils, along with the area’s distinctive microclimate, provide the ideal environment for growing world-class Chardonnay, Cabernet Sauvignon, and Zinfandel.
From a hillside on the western edge of the property, a fourth Sonoma County appellation, Chalk Hill, is visible. On summer mornings, fog rolls in through the Chalk Hill gap where the river makes its way southwest through Alexander Valley. As afternoon temperatures rise, the fog burns off. Next, maritime breezes from the Pacific Ocean enter the gap, and the vines cool off once again. This typically means a temperature drop of five degrees or more in the late afternoon, a cooling phenomenon referred to as the “Venturi Effect.” Stuhlmuller Vineyards is planted to 90 acres of Chardonnay and 57 acres of the Bordeaux varieties: Cabernet Sauvignon and Petite Verdot. The remaining three acres are planted to Zinfandel and Petite Sirah.