where did the tree of heaven come from
Ailanthus altissima A. altissima is native to northern and central China, Taiwan[22] and northern Korea.[23] In Taiwan it is present as var. takanai.[21] In China it is native to every province except Gansu, Heilongjiang, Hainan, Jilin, Ningxia, Qinghai, Xinjiang, and Tibet.[18]