The popular documentary Kiss the Ground (2020) and its sequel Common Ground (2023) both portray regenerative agriculture as a “simple solution” to climate change, chronic disease, and other planetary crises. Following in a long tradition of advocacy media, the environmentalists behind both films enlisted a host of celebrities to convince audiences that restoring soil health through regenerative agriculture was a cause urgent enough to transcend political divides. They won praise for their clear science communication and hopeful vision. Yet this vision - communicated on social media and in the United States Congress as well as in the two documentaries - not only ignored the scientific doubts and evidence gaps surrounding regenerative agriculture's benefits; it also shifted in response to a changing U.S. political climate. We examine the post-truth politics employed to create and promote this vision. Both popular and scholarly discussions of post-truth tend to associate it with the science denialism and “alternative facts” of right-wing populists. But while post-truth is also usually framed as an era or condition rather than an attribute of individuals or political parties, we know little about how this condition has shaped environmental advocacy. Our analysis of the activism behind the making and promotion of Kiss the Ground and Common Ground offers insight into this question.