Exploring interspecies interactions arising from the use of psychedelic plants this talk considers what can be learned from animism and shamanism in informing both psychology and ecology. Fusing research from parapsychology, transpersonal psychology, ecopsychology, ethnobotany and the investigation of psychedelics a perspective of transpersonal ecopsychology views plant-human interactions as meaningful, potentially transformative and sorely needed given the current rate of manmade species extinction on Earth. Results of recent online survey of 150 psychedelic users and their experiences of eco-consciousness and resulting behavioural change are also explored.