County leaders are being warned to be reasonable when considering using zoning to restrict cannabis businesses. The warning comes as the Maryland Cannabis Administration is about to open the application window for a social equity round of licenses that will award more than six dozen new dispensary licenses. Some county officials are frustrated by what they see as a vagary in the state law or a usurpation of local control of land use, the Maryland Association of Counties called for a measured approach when it comes to zoning.