13372 Spruce Grove Road,
Lower Lake, CA 95457
Tel (707) 994-4068


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Six Sigma Ranch & Winery is a pristine 4,300 acre ranch located just north of the Napa Valley in southern Lake County between Middletown and Lower Lake. There are 3 separate vineyards totaling 48 acres. All of the wines are estate grown using organic and sustainable farming practices. Six Sigma Wines are recognized as producing premium wines that are consistently outstanding. The varietals produced at the winery are Sauvignon Blanc, Tempranillo, Cabernet Sauvignon, Pinot Noir and Cuvee (Cabernet Sauvignon, Tempranillo and Syrah).

When you visit the ranch bring a picnic lunch (cheese and salami available for purchase) and enjoy your meal in the middle of 4,300 acres outside of the tasting room. Our tasting room is an old stagecoach stop located 2 miles inside the main gate. Enjoy the drive on the dirt road to the tasting room looking at the abundant wildlife and ranch animals. The tasting room is open daily from 11am until 4:30pm with complimentary tastings with no appointment necessary. Tours are available of the ranch in our 1972 Pinzgauer. Call the ranch at 707.994.4068 to make sure we are giving tours on the day of your visit or if you have any questions.





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