Zhao and colleagues found via a literature review that “studies generally reported beneficial associations between having indoor plants and mental health, such as reducing stress, depressive symptoms, and negative emotions. . . . In general, favourable effects of indoor plants are supported.” Tianyu Zhao, Iana Markevych, Dorota Buczytowska, Marcel Romanos, and Joachim Heinrich. 2023. “When Green Enters a Room: A Scoping Review of Epidemiological Studies on Indoor Plants and Mental Health.” Environmental Research, vol. 216, part 3, 114715, https://doi.org/10.1016/j.envres.2022.114715