Mich. Comp. Laws § 290.759

Sec. 9. (1) Ginseng plants or plant parts sold for propagation shall not be regarded as harvested or collected and are exempt from the certification requirement of this act. (2) Live ginseng plants or plant parts, except seed, for propagation shall not be transported or sold without the owner satisfying the plant certification and license requirements of the insect pest and plant disease act, Act No. 189 of the Public Acts of 1931, being sections 286.201 to 286.226 of the Michigan Compiled Laws.