Positioned on the eastern side of the Oakville appellation, tucked below the foothills of the Vaca mountain range, our 42-acre estate vineyard is the cornerstone of our winemaking program here at PlumpJack Estate Winery. We are extremely fortunate to have several different soil types on our property, giving us the ability to cultivate and blend copious blocks with different flavors and characteristics to craft wines with intriguing complexity.
The majority of our estate lies on a rocky, gravelly base that has been coated in alluvial soils that were washed down from the Vaca Mountains. This alluvial fan spilled out across the east side of our estate sharing land rich in volcanic nutrients creating a near-perfect soil composition – the gravelly base provides excellent water drainage, putting more stress on the vines, and the robust volcanic soils create more complex aromatics with structured, concentrated dark fruit character.
As we move west on our estate, towards the bowl of the Napa Valley, we are introduced to a few more different soil variations. Here the vines are influenced by sandy loam soils, and it’s this part of our property that we see expressions of raspberry, cherry, mint and the quintessential Oakville component, sage.
The last part of our estate, the west most portion, lies in the Napa River flood zone and is predominantly clay based. This particular soil and corridor of the property does not drain as well as the west side of the property. It is for this reason that we have planted a couple rows of sauvignon blanc and viogner, all of which thrive here with the extra dosage of water.