Clarence Jenkins, President Clarence Jenkins’ relationship with the grape industry began 45 years ago at the age of 12, when along side his father he was shown the essentials of grape growing. From this first meeting, Clarence has had a vast thirst for knowledge. Over the past years he received a degree in viticulture,became a certified diesel mechanic, and took numerous viticulture classes at the University of California at Davis. He was also a founding member of Napa Valley Vineyard Technical Group. He currently sits on the Sonoma Valley Citizens Advisory Commission and Sonoma Valley Groundwater Management Plan. Since 1971, operating a family business called Madrone Vineyard Management, Clarence has farmed more 2000 acres and aged and new cultivars and his attention to detail in vineyard management is known throughout the valley.