With almost 350 acres of vineyards strategically located in several of Napa Valley's best growing regions, stretching from Calistoga in the north to the city of Napa in the south Markham Vineyards hand-selects grapes from diverse microclimates to achieve balanced and rich wines.

A recently replanted 60-acre parcel comprising of 55 acres of Cabernet Sauvignon and five acres of Petit Verdot is situated at the base of Mount St. Helena and at the headwaters of the Napa River. The soils are rocky and fast-draining, producing low yields and intense blackberry jam characteristics. The surrounding hills create a small canyon that is full of bay laurel trees and diverse wildlife. Thermal inversions are typical to the area and allow extra hang time that further enhances the powerful flavors of the Cabernet and Petit Verdot fruit. Since the 1970's, this ranch has had a history of producing renowned Bordeaux varietals for Markham Vineyards, and it continues to impress to this day.

At the southern end of the Rutherford bench in the heart of Napa Valley, more than 95 acres are planted with Merlot, Cabernet Sauvignon and Cabernet Franc grapes. Ancient volcanic action created alluvial fans below the well-drained clay loam and gravelly loam soils. With the bay-controlled fog intrusion zone of Yountville, this ranch has proven to have an ideal terrior for the cherry jam/sour cherry characteristics present in the wines that come from the grapes grown on this ranch. Recent replantings have focused on new Cabernet clones, tighter spacing and a shift in the row direction to an ideal east/west positioning, increasing the hang time during the fall months to allow maximum flavor developoment.

Historically, this 120-acres parcel in the middle of the valley floor in the Yountville AVA was a blackberry ranch. The terrior is versatile, providing ideal conditions for an assortment of grapes varieties. One-third of the vineyard is Sauvignon Blanc, which grows well in the deep soils along the vineyard's exterior. Chandonnay budwood selected from the Oak knoll parcel was replicated here, where it thrives in Trubody's unique microclimate and has the tropical harmony with the Oak knoll estate. Similarly, the lovely flavors of the historically established Yountville Merlot made that variety an easy choice to plant here as well. This parcel also allows the winemaking staff to play with smaller "tasting room only" bottlings of Pinot Noir and Muscat.

Oak Knoll
Markham's southern-most parcel in the Oak Knoll district consists of 70 acres of Chardonnay, Sauvignon Blanc and Merlot in relatively equal proportions. Proximity to the San Pablo Bay brings cooling fog and climatic moderation to this vineyard. The predominate soil type is silty clay loam, which acts more like clay during the winter months, but changes to a dusty silt during summer. These growing conditions lead to white wines with tropical aromas and flavors, a perfect fit with Markham's fruit-forward wine style. High-density plantings of the winery's new Merlot clones have shown great potential, offering an excellent blending component.