Dulcius Vineyards is a family owned wine grape vineyard in rural Noble County, Indiana. Planted in 2012, Dr. Austin Fergusson and his son Scott launched Dulcius to produce high quality red and white wine grapes for use by local and regional winemakers. Dulcius produces Marquette, a dry red wine grape, as well as Steuben, Brianna, and Traminette. The vineyard is one of the largest in the state, with nearly 10,000 vines planted on 20 acres. 2017 production was 35 tons and was sold to area winemakers.