A Terroir of Distinction
Looking over the morning fog to the distant mountains of Point Reyes National Seashore, our thirteen acres of of Pinot Noir and Chardonnay grapes thrive in Sonoma Mountain's volcanic soils, basking in the sun and the amazing views, cooled by the Petaluma Gap afternoon ocean breezes.
Vista Springs Vineyard, which was developed in 2021 and planted in 2022 by Atlas Vineyard Management, drapes over knoll on the west-facing side of Sonoma Mountain, with elevations ranging from 1,420 to 1,600 feet.
Pinot Noir
Our 8 acres of Pinot Noir is planted in two distinct clone-and-rootstock combinations. In blocks A1 and A2, the Pinot Noir Clone 667 (often called Dijon Clone 667), originating from Burgundy, is coupled with the 1103 Paulsen rootstock. In Block A4, the Pinot Noir Pommard clone, also from Burgundy, is paired with Schwarzmann rootstock.
These different pairings reflect how different clone and rootstock combinations shape vine balance, water access, and fruit development in our mountain vineyard.
Chardonnay
Our 5 acres of Chardonnay is planted in two distinct clone-and-rootstock combinations. In block A3, Chardonnay Clone 95, the Dijon clone originating from the Côte-d'Or region in Burgundy, is coupled the 1103 Paulsen rootstock,. In Block 5, the Chardonnay Clone 95 is paired with Schwarzmann rootstock.
Sharing the same expressive clone across two different rootstocks reflects how to best optimize for different volcanic soil types in our mountain vineyard.
Vineyard Planting Map
A detailed view of our 13 acre vineyard, showcasing the strategic placement of Pinot Noir and Chardonnay clones across five distinct blocks (A1-A5) to optimize terroir expression.
Sonoma Mountain Geology
Geologic History
The history of Sonoma Mountain is defined by ancient volcanic activity from the Sonoma Volcanics period. Over millions of years, eruptions deposited layers of ash and lava, creating the mineral-rich basalt and rhyolite soils we farm today. This geologic foundation, coupled with the mountain's steep elevation, provides the unique drainage and complex nutrient profile that defines the terroir of Vista Springs Ranch.
The Mountain Advantage
Mountain grapes offer distinct advantages over valley fruit. Higher elevation provides intense solar radiation for ripening while maintaining cooler ambient temperatures, resulting in smaller berries with thicker skins. This creates wines with superior concentration, structural tannins, and vibrant acidity. Unlike the broader profiles of valley fruit, mountain grapes capture a focused mineral energy and profound aging potential.
A Climate for Viticulture
The chart above compares weekly high and low temperature data recorded at Vista Springs Ranch in comparison to similar data recorded at Yountville in Napa Valley, and at Petaluma at sea level just a few miles west. Vista Springs is considerably more moderate than either location, especially at the extremes. Vista Springs weekly highs are considerably cooler than Yountville, rarely surpassing the mid-90's as compared to Yountville's frequent triple-digit temperatures. At the same time, weekly lows are considerably warmer than Yountville, with Vista Springs temperatures remaining above freezing. In comparison to Petaluma, on average weekly highs are similar, but weekly lows are generally warmer, particularly during times of freezing weather.
Vista Springs Vineyard is blessed with an ideal climate for viticulture due to a distinct microclimate shaped by elevation, topography, and marine air. Due to its thermal belt & elevation above the fog line, Vista Springs Vineyard enjoys warmer nights and cooler daytime highs than nearby regions, making it ideal for Pinot Noir and Chardonnay.
Vineyard Soil Composition
Vista Springs Vineyard owes its character to the geology of Sonoma Mountain. Raynor clay, formed through the prolonged weathering of volcanic ash and rock deposits, provides the primary foundation of the vineyard. In warm, dry climates like ours, Raynor clay produces outstanding viticultural results, holding moisture through the growing season. Its depth and structure support balanced vine growth and help the fruit develop concentration without losing freshness.
Goulding cobbly clay loam, another highly coveted "mountain terroir" soil type, complements the Raynor clay with a more open, rocky profile. The cobbles improve drainage, encourage deeper rooting, and limit excess vigor, helping the vines produce smaller, more intensely flavored clusters. Together, these soils create a balance of water retention and drainage—supporting natural acidity, mineral texture, and distinctive character in our Pinot Noir and Chardonnay grapes.
Our Reserve
Collection
The 2025 vintage was processed at Opal Moon's Crush facility in Sonoma, California, and aged for more than a year in French oak barrels. Samples of these higly rated Pinot Noir and Chardonnay wines are are available for winemakers who are interested to experience what grapes from the Vista Springs Vineyard can enable!
Larger quantities of our 2025 Vintage Chardonnay and Pinot Noir wine can be purchased directly from Opal Moon Crush!
The Petaluma Gap AVA
Vista Springs Ranch is proudly situated within the Petaluma Gap AVA, a unique winegrowing region defined by its wind. The daily afternoon maritime breezes from the Pacific Ocean cool our Pinot Noir and Chardonnay grapes, allowing for longer hang times and intense flavor development.
