Wisconsin designated the cranberry (Vaccinium macrocarpon) as official state fruit in 2004. Cranberries are one of only three commercially cultivated fruits native to North America (blueberries and concord grapes also originated in North America). Cranberries are a tradition for all Americans at Thanksgiving.

Cranberries were important in the diets of American Indians for hundreds of years before the Pilgrims landed. They ate them raw, dried, boiled with honey or maple sugar, and baked with cornmeal into bread. A mixture of cranberries, cornmeal, deer meat, and animal fat was pounded into cakes and dried in the sun to make pemmican (a 'trail cake' that did not spoil for hunting trips and long journeys).

The Indians also used cranberries for dye to color robes, rugs and blankets, and for medicinal purposes (they believed cranberries had a calming effect on nerves, and they made a poultice from cranberries to draw the poison from arrow wounds). Pilgrims learned about the berry from the Indians and cranberries became part of the colonial diet as well. Sailors began taking cranberries aboard ships for whaling expeditions and the long journeys to China (cranberries are high in vitamin C and prevented scurvy).