Established in 1858, Gundlach Bundschu’s estate vineyards are located 35 miles north of San Francisco on the southwesterly slopes of the Mayacamas Mountain Range. It’s located at the southernmost point in Sonoma Valley, flanked by the Carneros district to the south, Napa Valley to the east and nestled within the larger Sonoma Coast American Viticultural Area. Rhinefarm has a unique combination of steep hillsides and cool valley floor sites, allowing us to grow a broad variety of wines at a very high-quality level.

Relying on the Bundschu Familys 160+ years of Sonoma vineyard knowledge, the grapes for Mountain Cuvée are sourced from our organically-farmed Rhinefarm estate as well as hand-selected fruit from sustainable vineyards along the Mayacamas Mountain range near our home ranch.

Gundlach Bundschu Sonoma Cabernet from our Rhinefarm is shy – it doesn’t reveal itself quickly. Napa Cabernets often announce themselves as the life of the party but Rhinefarm Cabs are serious, dark and deep with lots of food-friendly tannin. They’re designed to age, Bordeaux-style. Cooler nights and cooler mornings help shape our style of Cabernet Sauvignon, as well as our meticulous handwork in the vineyards. The grapes need a long time to ripen to perfection and thus, are the first vines we prune since they need that extra time to develop. With this grape, patience is key to creating beautiful, vineyard-driven wine. In general, we pick Cabernet Sauvignon around Halloween before the rain arrives for the winter, then optically sort them with as much gentle handing as possible.

As of September 2023, we are officially Regenerative Organic Certified®