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Sunchokes (Helianthus tuberosus), also known as Jerusalem artichokes, are root vegetables that are members of the sunflower family. This hardy perennial vegetable is native to eastern North America, where Native Americans cultivated it as a root crop before the Europeans arrived on the continent. Sunchokes grow to be five to 10 feet tall and produce beautiful yellow flowers and edible tubers that have a nutty flavor.