Md. Code, Bus. Reg. § 17-911

(a) This section does not apply in Allegany and Washington counties. (b) A municipal corporation may not require a local license or impose a local fee or tax to sell fresh fruits, vegetables, or other country produce from a wagon at retail if the seller is the producer. (c) However, a municipal corporation by ordinance may: (1) provide for the issuance of identification cards or tags to producers of country produce who sell the produce from a wagon at retail; (2) set a fee, not exceeding 50 cents for each producer, for the issuance of identification cards or tags; and (3) require producers to get and display identification cards or tags. (d) (1) A person who is not the producer may not sell or offer to sell any fresh fruits, vegetables, or other country produce from a wagon at retail in a municipal corporation that requires a local license or imposes a local fee or tax to do so without getting the license or paying the fee or tax. (2) A person who violates this subsection is guilty of a misdemeanor and, on conviction, is subject to a fine not exceeding $25.