Le Baron Ranch in Dry Creek Valley was a large thriving hop station in the 1800s. When Prohibition started, the Ranch became a prune station. Later, the Ranch produced small amounts of "medicinal wines." In 1983, the Le Baron Ranch was sold to the Manning family and Le Baron Ranch wines were produced by the Mannings' Chateau Diana Winery to celebrate the rich history of the Le Baron family.
The Chateau Diana Winery is open daily for tour and tasting in the Dry Creek Valley. A Pinot Noir sourced from Northern Italy is also offered under the Black Oak label