A. tuberosum originated in the Siberian–Mongolian–North Chinese steppes,[11] but is widely cultivated and naturalised. It has been reported as growing wild in scattered locations in the United States (Illinois, Michigan, Ohio, Nebraska, Alabama, Iowa, Arkansas, and Wisconsin).[14][15][16] However, it is believed to be more widespread in North America because of the availability of seeds and seedlings of this species as an exotic herb and because of its high aggressiveness.