European Urban Farming Initiative Could Yield 20 Million Tons of Vegetables and Meet 28 Percent of Demand

New study of 840 European cities finds that rooftops and vacant lots could produce 20 million tons of vegetables annually to boost food resilience.

By: AXL Media

Published: May 1, 2026, 5:59 AM EDT

Source: Information for this report was sourced from EurekAlert

Mapping the Untapped Potential of European City Landscapes

A comprehensive spatial analysis published in the journal Sustainable Cities and Society has revealed that urban agriculture could produce one-third of Europe’s current vegetable output. Researchers from the University of Groningen and the Leibniz Institute of Ecological Urban and Regional Development evaluated 840 cities to determine how residential gardens, rooftops, and vacant urban land could be repurposed. The study used high-resolution land-use data and building footprints to estimate an annual production capacity of up to 20 million tons of vegetables. According to associate professor Prajal Pradhan, these findings provide a roadmap for building resilient food systems as cities face increasing climate pressures and supply chain disruptions.

Low-Tech Cultivation Methods Prioritized Over Industrial Systems

The research specifically focused on the availability of land and rooftop spaces suitable for open-air, soil-based cultivation rather than high-cost hydroponics or vertical farming. By analyzing rooftops and green areas, the team estimated that between 4,500 and 7,500 square kilometers of urban surface area across Europe could be viable for agriculture. This total area is roughly equivalent to the size of one or two large islands like Mallorca. Lead author Stepan Svintsov explains that the study targeted underutilized spaces that can be converted with minimal technological barriers, offering a more accessible path for community-led food production in dense metropolitan zones.

Geographic and Climatic Variation Impacts Regional Productivity

The study emphasizes that the feasibility of urban farming is not uniform across the continent due to varying climate classifications and city densities. Northern European cities often face shorter growing seasons and reduced solar radiation, while Southern European metropolitan areas must contend with significant water scarcity issues. These regional factors mean that urban planning policies must be tailored to local environmental constraints. Despite these challenges, the researchers maintain that integrating food production into the city fabric could significantly reduce the environmental impact of long-distance food transportation and strengthen local urban resilience against global market fluctuations.