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“I’d be hard pressed to find a site that’s better than y’all’s site, top to bottom.”


“I’d be hard pressed to find a site
that’s better than y’all’s site, top to bottom.”


Winfield Vineyard

Winfield Vineyard consists of seven distinct blocks of Cabernet Sauvignon on a 12-acre “mezzanine” above the valley floor nestled into the foothills of Mount Saint Helena. Each block is differentiated by its soil type & moisture content, rootstock & clone selection, viticultural protocol and irrigation program.

Block Sourcing

The Soils

The vineyard is located in the Calistoga AVA of the upper Napa Valley where the volcanic slopes of Mount Saint Helena rise out of the valley’s alluvial floor. The property extends from 425 to 590 ft. in elevation, and the confluence of geologic landscapes at this site, combined with the unique mesoclimate of the upper valley, create a terroir ideal for Cabernet Sauvignon.

Winfield Vineyard is perched on a sloping mezzanine, or bench, above the Valley floor. This location on the valley floor’s perimeter provides a geological advantage with respect to the underlying granular, friable and well-aerated volcanic soils.

The vineyard is surrounded by a natural amphitheatre of steep, sun-focused hillsides. The soils are predominantly cobbly loam with gravelly loam in the upper sections. Its well taps into an aquifer of pure water weeping off Mount Saint Helena.

The Climate

Napa Valley is an ideal grape growing corridor characterized by its long growing season and its warm, dry days alternating with cool nights frequently marked by layers of fog.

This up-valley mesoclimate accentuates these temperature rhythms for two reasons ~ daytime temperatures are higher at our altitude and nighttime conditions are cooler as influenced by the maritime air pulled into the valley in the hot afternoons and by cascading air flow down from Mount Saint Helena. These swings provide the vineyard with uniquely cool ripening conditions.

By utilizing sustainable, fish-friendly farming practices, we strive to respect this special place.

mist over The GRADE Vineyard