Through an examination of "In-Common Sites," conducted with young people to investigate their relationship with Mousehold Heath in Norwich, this article considers the possibilities of performance to not UK, only represent a spatially defined urban common but also to enact a commons. It is argued that performance is a generative social practice: the ecological potential of both performance and commoning practices lies in their shared commitments to participation, collaboration, and interaction among people and their environments. Starting from the sensory and affective encounters between body and environment, I reflect on contested and entangled acts of human and more-than-human interconnection.