Any state can ban billboard advertising of marijuana because the product is illegal under federal law (Billboard Insider)

Richard Rothfelder, Partner, Rothfelder & Falick. The one thing that is certain is that, until the weed is legalized under federal law, the First Amendment protection for the outdoor advertising of it will remain limited. And, that conclusion answers your question, namely since Ohio permits advertising of alcohol, how can the State prohibit it for cannabis? […]