Come November, Colorado voters will be asked to decide whether to legalize psilocybin and psilocin, psychoactive compounds in magic mushrooms, as well as whether to establish healing centers where the public can access them in a therapeutic context. But some of the state’s foremost psychedelics advocates are not on board with the measure, known as the Natural Medicine Health Act, and are actively campaigning against it. That includes Melanie Rose Rodgers, who in 2019 was part of the team that convinced Denver voters to decriminalize the use and possession of shrooms here.