[3][4] Originally part of the largest peach orchard in the United States, the vineyard was first planted in 1988, and opened to the public in 1993.

Wine is produced from Chardonnay, Cabernet Franc, Cabernet Sauvignon, Chambourcin, Counoise, Gewürztraminer, Marsanne, Mourvèdre, Pinot Gris, Pinot Noir, Riesling, Roussanne, Syrah, and Viognier grapes.

[7][9] It is the only winery in New Jersey that grows and produces wine from Counoise, Marsanne, and Roussanne – vinifera grapes indigenous to the Rhone river valley of France.

[16] Unionville has a plenary winery license from the New Jersey Division of Alcoholic Beverage Control, which allows it to produce an unrestricted amount of wine, operate up to 15 off-premises sales rooms, and ship up to 12 cases per year to consumers in-state or out-of-state.

Unionville Vineyards is also a member of the Garden State Wine Growers Association and Vintage North Jersey.