Mich. Comp. Laws § 290.769

Sec. 19. (1) A grower or dealer shall submit all cultivated and wild ginseng in the grower's or dealer's possession for weighing annually on March 31. The director shall record separately the weight of the certified and uncertified ginseng submitted. Future export certification of uncertified ginseng shall be based on these records in a draw-down process until all documented stock has been certified. (2) A dealer shall document the cultivated ginseng and wild ginseng submitted for weighing as required in section 17. The cultivated ginseng and wild ginseng submitted for weighing and all documentation shall be available for inspection by the director at all reasonable hours.