Previously untouched because of access rights, this 4-acre plot on St. Helena’s Western bench is a blue-chip site that Hardin Vineyard Management developed from the ground up—one that rubs shoulders with some of the most celebrated vineyards in Napa Valley. Raw, rocky riverwash from the bordering Sulphur Springs dominates the soil, and afternoon breezes flow down from the Mayacamas through the Heath and Sulphur Canyons, cooling the vines.  Only used for MW and Schrader.