The article explores the role of the outdoor environment in the Gardens for Bellies Danish school garden program in relation to student wellbeing. It is based on exploratory multiple case study research. The study indicates that the school garden program promotes students' wellbeing through their positive emotions about being outside in the outdoor environment. Garden activities and their relations with peers, garden educators, and teachers seemed to positively affect students' self-esteem. Over and above the positive social environment, students' relations with the natural environment seem also to affect their wellbeing as they develop empathy for animals, insects, and plants. Whether this influences their wellbeing, interpersonal relations, and planetary care in the long run after the program is not, however, documented. Not all students thrive in the open, free, and sometimes chaotic space of the garden. However, the majority of students in the program seem to experience a sense of wellbeing.