Gardens and parks provide a variety of services for city dwellers: They cool the urban climate, clean the air, provide habitats for plants and animals and recreational spaces for the people who live and work in the city. Nevertheless, allotment gardens, community gardens and even parks are repeatedly under pressure to be displaced when new housing is to be built or commercial space is to be expanded. In order to make the value of these areas for sustainable urban development more tangible, the GartenLeistungen project has recorded and evaluated these diverse effects with numerous partners from science, administration and practice. In addition to exemplary calculations for various green spaces in Berlin and Stuttgart, we have tested in four real-life laboratories how gardens and parks can be further developed to maintain and further increase their benefits for the urban population. From the experience and knowledge gained, integrated overall concepts were developed to safeguard and promote both traditional and innovative garden projects and parks. At the expert conference on 13 May 2022 at the Gärten der Welt conference centre, it was explained how the project mapped and evaluated ecological and cultural achievements and which strategies were developed by the practical partners in Berlin and Stuttgart. During the conference and the subsequent excursions, the participants were able to network. Click here for the conference website and the presentations. Here you can download the final publication of the project.