“Olive Hill Estate Vineyard is blessed by natural underground hot springs that warm the soil, creating a naturally frost-free environment throughout the growing season.”
It is protected on the west by Sonoma Mountain, which acts as a buffer to coastal fog, creating more sun exposure for the grapes. Less fog, more sunlight and no frost during the growing season, makes for days that are seven to ten degrees warmer than other parts of Sonoma Valley during the crucial growing months. These high daytime temperatures result in earlier bud break, an extended growing season and an earlier harvest than neighboring vineyards.
In addition to these unusually warm days, Olive Hill also enjoys the tempering effects of cool ocean breezes, which travel from the northwest and are funneled between the Sonoma and Mayacamas mountains in the late afternoon. These various attributes all combine to create a truly unique microclimate, with warmer-than-average days and cooler-than-average nights that result in grapes of greater intensity and character. This unique set-up provides the ideal conditions for maturing Cabernet Sauvignon grapes to the perfect ripeness.
Olive Hill Estate Vineyard has well drained gravelly loam soils that create exceptional growing conditions for Cabernet Sauvignon grapes, with ripening patterns controlled by drip irrigation. Varying soil depths and exposures also help to create a variety of flavors from which winemaker, Tom Montgomery, crafts the B.R. Cohn wines.
Olive Hill Estate’s 61 acres of vineyards are planted mostly with Cabernet Sauvignon, with small amounts dedicated to Petite Sirah, Pinot Noir, Zinfandel, Cabernet Franc, Petit Verdot and Malbec.
Olive Hill’s eight blocks are farmed as uniquely separate vineyards, each with its own individual strengths and attributes. The original vineyard blocks are cane-pruned, and utilize primarily St. George rootstock, two-wire trellising and 8 x 12 spacing. The more recent blocks, planted between 1997 and 1999, utilize viticultural techniques such as steel stakes, closer vine spacing and vertical trellising, with Cabernet Sauvignon (clone 4, Mt. Eden clone and French clones 15 and 337) planted on 420A and 101-14 rootstock.
Tom Montgomery works intimately with each row within each block of the vineyard carefully determining which grapes will be used in each wine. Once at the winery, he practices minimal intervention winemaking, asserting that it is Olive Hill Estate’s unique terroir that is responsible for the rich, elegant wines that have become a hallmark of B.R. Cohn Winery.
B.R. Cohn Winery’s celebrated Olive Hill Estate Vineyard Special Selection Cabernet Sauvignon and Olive Hill Estate Vineyard Cabernet Sauvignon are made exclusively from grapes grown on the Olive Hill Estate Vineyard. In addition, grapes from Olive Hill Estate Vineyard contribute to B.R. Cohn Sonoma Valley Zinfandel and Silver Label Cabernet Sauvignon. B.R. Cohn Chardonnay is produced from grapes grown in the Carneros region.