This variety was bred by J. H. Ricketts of Newburgh, NY and introduced in 1880. It is a Concord x Iona hybrid and is excellent as a table grape or for wine production. Jefferson can resemble, but is not equal to the vigor, productivity, and fungus disease resistance of Concord. In color and quality, the fruit resembles Iona, but the cluster is much prettier than Iona. It produces fruit early-late season. Jefferson is not particular about its soils. It is a superior table grape because of its attractive appearance and very large to large clusters. The berries are medium-large and uniform in color. The flavor and texture of the grape is juicy with rich vinous flavors and delicate strawberry-like aroma. The light pale golden colored wines are of excellent quality; with fruits of apricots, soft labruscas, honey, pears, melons, and light almonds.(https://www.hudsonvalleyheritagewines.com/heritage-vines)