Mich. Comp. Laws § 333.29309: Maintenance of records.

Sec. 309.

(1) A grower shall maintain records that contain all of the following information:

(a) Each record of sale generated under section 307.

(b) The name and mailing address of any person from whom the grower purchased viable industrial hemp.

(c) The name of each variety of industrial hemp the grower grows.

(d) Evidence that the information required to be reported under section 301 was submitted and received by the USDA Farm Service Agency.

(e) A notice of disposal generated under section 407(6)(b), if applicable.

(2) A grower shall maintain the records under subsection (1) for 5 years and make the records available to the department on request.