Md. Code, Environment § 9–2104

(a) Subject to § 9–2102(b) of this subtitle, on and after October 1, 2018, a person that distributes or sells a compostable food or beverage product intended for sale or distribution by a retailer in the State shall ensure that the compostable food or beverage product is labeled:

(1) In a manner that is readily and easily identifiable from other food or beverage products;

(2) In a manner that is consistent with the federal Guides for the Use of Environmental Marketing Claims; and

(3) (i) With a certification logo indicating the compostable food or beverage product meets the ASTM D6400 standard specification or ASTM D6868 standard specification; or

(ii) As compostable.

(b) Subsection (a) of this section has effect only to the extent that the provision does not conflict with the federal Guides for the Use of Environmental Marketing Claims.