Of all fruits, only three - the blueberry, the Concord grape and the cranberry can trace their roots to North American soil. And of those, none is as versatile as the cranberry. Contrary to popular belief, cranberries do not grow in water. Instead, they grow on vines in impermeable beds layered with sand, peat, gravel and clay. These beds, commonly known as "bogs," were originally made by glacial deposits. Normally, growers do not have to replant since an undamaged cranberry vine will survive indefinitely. Some vines on Cape Cod are more than 150 years old.