The Blue Rock 100 acre Estate is located in Sonoma in the Alexander Valley next door to Silver Oak Winery. The hillside vineyard, consisting of 46 acres, is planted to the five Bordeaux varietals…Cabernet Sauvignon, Cabernet Franc, Petit Verdot, Merlot, and Malbec In 1993, an additional 3 acres of Syrah were planted on an extreme hillside.