Maryland Code, Criminal Law § 5-628

(a)(1)(i) Except as provided in subparagraph (ii) of this paragraph, a person may not hire, solicit, engage, or use a minor to manufacture, deliver, or distribute on behalf of that person a controlled dangerous substance in sufficient quantity to reasonably indicate under all the circumstances an intent to distribute the controlled dangerous substance.

(ii) This paragraph does not prohibit a person from hiring, soliciting, engaging, or using a minor to manufacture, deliver, or distribute a controlled dangerous substance if the manufacturing, delivering, or distributing has a lawful purpose.