Mich. Comp. Laws § 750.299

Sec. 299. False statements regarding agricultural seeds—Any person or his agent or employe, who, in writing or in a newspaper, circular or other publication published in this state, makes or disseminates any statement or assertion of fact concerning the superior qualifications, quality, value or locality where grown of any agricultural seeds sold or offered for sale in this state, or the possession of rewards, prizes or distinctions conferred on account of such seeds, or the motive or purpose of such sale, intended to give the appearance of an offer advantageous to the purchaser, or as an inducement for the planting of such seeds, which is untrue or calculated to mislead and to induce a person to purchase such seeds, is guilty of a misdemeanor.