The Yorkville Highlands appellation consists of approximately 40,000 acres which straddle Hwy 128. It connects the Alexander Valley to the southeast with Anderson Valley appellation to the northwest. The cooling influence of the nearby Pacific Ocean along with moderate temperatures results in a long growing season. Some of the coldest evening temperatures on the North Coast are found in this region and those frigid conditions are essential for preserving grape acidity.
Yorkville Highland's fruit can ripen evenly, with acidity, structure and richness are well-balanced in the wines. The unique nature of the gravelly soil produces wines with mineral characteristics. The region has its largest plantings in Cabernet Sauvignon, Syrah and Pinot Noir.
Yorkville Highlands received formal recognition as an AVA in 1998, which was the year in which the Williams purchased 600 acres. They planted 118 acres consisting of Chardonnay, Sauvignon Blanc, Petite Sirah and Shiraz in 1999 and were rewarded with their first harvest in 2001.
