In response to the dual challenges of urbanization and population growth, urban edible landscapes have emerged as innovative green infrastructure with the potential to address ecological, social, economic, and food security issues. This study systematically analyzes 3,089 publications from 2000 to 2024, sourced from the Web of Science database, using keywords such as ‘Edible Landscapes,’ ‘Edible Garden,’ ‘Rooftop Garden,’ ‘Community Garden,’ and ‘Productive Landscape.’ This study adopts bibliometric and visualization tools, such as CiteSpace and R, to systematically sort out and visualize the research hotspots, knowledge structure, emerging trends, and the evolution of this field. The analysis begins with a co-occurrence network of keywords, identifying core topics and evolving research trends. Cluster analysis further delves into various research themes, elucidating the field’s main directions and focal points. The paper highlights the multifaceted impacts of edible landscapes on urban ecosystems and residents’ well-being, emphasizing their critical role in promoting urban sustainability. Additionally, it outlines strategic recommendations for policymakers and stakeholders to enhance the implementation and expansion of urban edible landscapes in alignment with sustainable development goals. This research provides comprehensive insights into the historical evolution, status, and future trends of urban edible landscape studies, offering valuable guidance for policy development and practical innovation in both academic and real-world contexts.

This paper introduces the concept of edible landscapes to underutilized spaces in viaduct underpasses to explore their untapped potential. Using a case study approach that involves on-site observations, questionnaires, and photographic documentation, this study will document the characteristics of 29 space nodes beneath 18 viaducts and along their routes in Guangzhou’s Tianhe District. It analyzes user behavior and aspirations to activate the underutilized spaces of the viaduct underpass, optimizing their residual space, and enhancing their interactive potential. Furthermore, the paper proposes targeted design strategies for the rejuvenation and sustainable management of these underappreciated urban lost spaces. This study has two primary contributions. Firstly, it enhances the conceptual understanding of the lost spaces located in the viaduct underpass. Secondly, it investigates potential approaches and the benefits of utilizing these spaces for edible landscape development within the urban environment of Tianhe district in Guangzhou city.