Catawba grapes were introuced to wine-growers in the 1800s by Major John Adlum of Georgetown, D.C.. Grown predominantly on the East Coast of the United States, this purplish-red grape has a rather sweet flavor. It is typically in season from September to November and can be used in wines, juice, jams and jellies. Although usually classified as Vitis labrusca, Catawba is widely believed to have at least some Vitis vinifera in its background. The grape can have a pronounced musky or "foxy" flavor, which some aficionados consider inferior to the flavor of V. vinifera, though others find it distinctive and pleasant. The grapes are particularly sensitive to ozone pollution.