Our History

In 1968 the perfect spot to grow Cabernet Sauvignon was located in the Southwest corner of the Napa Valley right along Dry Creek.

I n 1968 a walnut orchard in the Southwestern corner of Napa Valley, in what is now the AVA of the Oak Knoll District, was converted to Cabernet Sauvignon vineyards by Bruce Newlan, a rocket scientist from San Jose who vacationed in Napa Valley. The roots of Silenus Winery were firmly established.

The choice of locating in the Oak Knoll District (OKD) was very deliberate. The OKD lies at the southern end of the Napa Valley where the growing season is longer, providing early bud break and a long, leisurely growing season for optimal, balanced ripeness. 

The cooler nights and slowly rising daytime temperatures create a naturally long hang time for fruit to achieve bright acidity, great texture, fruit-forward aromas and elegant flavors.

Through the 1970’s the grapes from this vineyard were sold to Silver Oak, Robert Mondavi, and Inglenook wineries and consistently ended up in their reserve wines. 

Realizing the stellar-quality wine this 20-acre vineyard produced, Newlan obtained a winery permit in 1978 and began producing his own award-winning wines. In 2008 the ownership changed and the first vintage of Silenus Wines were introduced. 

Silenus Wines are now available internationally and in the United States. The winery remains committed to crafting wines that showcase our vineyards and the Oak Knoll District of Napa Valley.

Our Vineyards

In 1968 the perfect spot to grow Cabernet Sauvignon was located in the Southwest corner of the Napa Valley right along Dry Creek.

This area is now designated the Oak Knoll AVA
(American Viticultural Area), and is one of the most
diverse growing regions in the Napa Valley. The
close proximity to the San Pablo Bay provides the
fruit with warm days and cool nights. It has a perfect
convergence of growing conditions, the mildest

climate in the Napa Valley, alluvial fan soils that provide the right balance of nutrients and stress, and the longest growing season, about 8 months, that results in full and complex flavor development in the grapes. The result is a lush, balanced and profound wine. At Silenus, we refer to our estate wines as the rebirth of a classic Oak Knoll vineyard.

1968–2008 Grape Sales

The land was originally home to a walnut orchard but had all the right characteristics to make world-class wines. The orchard was purchased, the walnut trees torn out, and vines were planted on St. George rootstock. As the vines grew and gained strength and maturity, a portion of the grapes were sold to Robert Mondavi Winery, Silver Oak, and Inglenook Winery from 1970 through 2002 and consistently ended up in their reserve wines.

1992 Phylloxera Strikes

In 1992, the vineyards began to show the effects of phylloxera, a microscopic aphid that lives on and eats the roots of grape vines, and needed to be replanted on different, phylloxera-resistant rootstock. Robert Mondavi so loved the grapes from this vineyard that, at his expense, he offered his crew to assess the vineyard and help establish a replanting plan that would include the most appropriate rootstocks for the soils and the best Cabernet Sauvignon clones for the wine.

1993–1994 Replanting

In 1993, the first sections of the vineyard were replanted on 101-14 rootstock for Cabernet Sauvignon clone 337 and 15 and 1103P rootstock for clone 8. The following year the remaining sections were replanted on 3309 rootstock for clones 15, 4 and 337. These vineyards are still vigorous and are consistently producing the highest quality grapes year in and year out.

Farming Practices

A Story of Restoration through Carbon Sequestration

Silenus Winery has been employing healthy environmental practices for many years. The winery firmly believes that sustainable practices for our vineyards and vineyard workers contribute to a better wine and a better life.

And recently Silenus has become one of the first Napa Green properties (the sustainability program from Napa Valley Vintners) to develop a Carbon Farm Plan for the vineyards to become Carbon Neutral. This type of regenerative farming has become the gold standard in sustainability and healthy farming. As other types of farming (organic or biodynamic) maybe be healthy for the grapes, they do not address the use of many fossil fuels or do not consider the backbreaking work that can be required of vineyard workers.


At Silenus the winery practices carbon sequestration, also known as carbon farming, the primary way for a vineyard to become carbon neutral. In addition to replacing fossil fuels with clean energy, Silenus also creates conditions for plants to retain as much carbon in the ground as possible versus releasing it into the atmosphere. This is accomplished primarily by planting specific cover crops in the vineyard in every other row, eventually plowing them back into the soil. Alternating the rows every other year means that the tractor is used half as much, yet the legume heavy blend consistently adds beneficial nitrogen back to the soil which helps with photosynthesis. This lessens the carbon footprint dramatically, as it acts as a natural fertilizer while helping to retain water which means less energy and more sequestration.


This type of farming is supplanted with several other efforts, each aimed at reducing CO2 output. The winery is replanting a grape parcel that lies next to Dry Creek from a producing vineyard to a riparian buffer of native trees, plants and grasses. These local plants help to eliminate invasive species which create problems. In addition, a natural compost (which includes spent skins and seeds from the grapes) is added to the vineyard soil which additionally helps to reduce many tons of carbon.


The efforts at Silenus Winery for Carbon Sequestration have neutralized the carbon footprint of the winery, and has had the net effect of removing 886 tons of carbon from the atmosphere annually, equivalent of taking 188 typical cars off the road for a year – every year, while enhancing our vineyard practices and quality.