One way of using public green spaces is to allow cultivation by citizens. Community gardening has proven to have many social benefits and can undoubtedly contribute to a sustainable society in a variety of ways. Yet while being clearly attractive for both citizens and officials, it does not always flourish in practice. In this study we draw on interviews with park engineers working in the city of Stockholm to analyze why community gardening is not more prevalent, despite the clearly existing political and popular will to promote it. The study shows that there are significant differences between Stockholm City's district administrations. Through applying implementation theory, we show that relatively small variations in local resources, expertise, and interests fundamentally shape the outcome of community gardening initiatives. It is also shown that unclear guidelines and a lack of horizontal and vertical communication constitute institutional barriers to the implementation, development, and resilience of community gardening in the districts of Stockholm. © 2020 Masaryk University.