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Certified Napa Green
Napa Green is a comprehensive environmental certification program for vineyards and wineries in the Napa Valley. St. Supéry Estate Vineyards and Winery achieved Napa Green Land certification in 2008 and Napa Green Winery designation in 2012. The program represents a soil-to-bottle approach to environmental stewardship and winemaking, integrating holistic management practices at every step of the process. Independent, third-party certification of farms and winemaking facilities makes Napa Green one of the most comprehensive environmental accreditations in the wine industry, requiring continual improvement for renewal.
Napa Green Land
Rutherford and Dollarhide are planted to cover crops between the vine rows, to harbor beneficial insects, compete with weeds, add essential nutrients to the soil and limit erosion. The leaf canopies and grape clusters are managed to host good bugs which prey on the bad guys, help eliminate the use of fungicides and regulate fruit exposure to the sun to obtain optimal flavors and color, and therefore better wine.
More than 100 bird boxes have been installed in both vineyards to encourage the habitation of Western bluebirds, which eat mosquitos and herbivorous insects such as the blue-green sharpshooter, a vector of vine-killing Pierce’s disease. Owl boxes host the nocturnal birds that gobble gophers and other critters that can damage the vines. At Dollarhide, a large rattlesnake population helps keep the burrowing pest population from munching on the vine roots.
At the winery, we create our own compost from a byproduct of the winemaking process. Pomace — seeds, skin and stems left over after crush — is trucked to Dollarhide and composted over the winter and eventually returned to the vineyard soil as fertilizer as an organic matter booster/soil builder.
Napa Green Winery
Our rooftop solar array collects energy from the sun, offsetting roughly 80% of our energy bill. We recycle all winemaking, bottling and winery materials and adhere to a strict purchasing policy for all items used at the winery and in the vineyard. This includes but, is certainly not limited to purchasing glass that is made from recycled goods, ordering paper products that exceed 50% post-consumer waste and the investment in new technology, like high pressure-flow washers, that reduced our water use by half. Focused on sustainable efforts in all facets, we planted a culinary garden in 2012 to support our farm-to-table commitment. We incorporate fresh produce from our culinary and espalier gardens and fruit from our Dollarhide Ranch at the winery in our food and wine pairings and bring this experience to our neighbors through selling to local restaurants and at seasonal Bay Area farmers’ markets.