Exploring potential mechanisms involved in the relationship between eudaimonic wellbeing and nature connection

•The mechanisms within the nature connection-eudaimonia relationship are unknown.•Using Self Determination Theory, we identify two potential mechanisms.•Firstly, satisfying the psychological need of relatedness via nature connection.•Secondly, fostering intrinsic value orientations hence promoting mental wellbeing.•Understanding mechanisms can inform the design and delivery of urban nature. A growing body of research demonstrates associations between nature connection and a wide variety of positive health and wellbeing outcomes. Yet, the interpretation of this research is restricted because underpinning mechanisms − particularly the psychological mechanisms of wellbeing enhancement as opposed to wellbeing restoration − remain largely unexplored. Understanding such mechanisms is important for theory development and for assisting policy-makers and urban planners to translate this theory into practice effectively. This essay examines the limitations in our current understanding of the psychological mechanisms involved in the relationship between nature connection and eudaimonic wellbeing. It also advances opportunities to move the field forward through exploring two potential mechanisms, namely satisfying the psychological need of relatedness and fostering intrinsic value orientation. These mechanisms may explain how an individual’s level of nature connection enhances their psychological wellbeing. Understanding such mechanisms could improve the implementation of targeted nature connection policies and interventions designed to enhance psychological wellbeing among complex urban populations with diverse needs.