Research & reports

Emelie Larsson, Katarina Giritli Nygren · Landscape and Urban Planning · Sweden

This study explored urban gardens as "thirdspaces" by interviewing allotment gardeners and community gardeners in small Swedish cities. Allotments were examined as "lived places" where experiences, meanings, and a sense of place develop. The results illuminated how allotment gardens function as a nature-human crossing point and a practice connecting city residents with countryside life and non-landowners with the land.

Svetlana Hristova-Vladi · Postmodernism Problems · Bulgaria

The book "Urban Agriculture for Improving the Quality of Life. Examples from Bulgaria," edited by Donna Pickard, explores the real versus potential effects of urban agriculture on the welfare of urban and nearby communities. This multidisciplinary study analyzes the interplay between urban agriculture practices and quality of life through social, educational, economic, spatial, and ecological aspects. It also delves into the historical dimension of urban agriculture in Bulgaria, including examples from Sofia in the 1930s.

Lena Katharina Mietz, Bárbara Civit, Alejandro Pablo Arena · Environmental & Socio-economic Studies · Argentina (Mendoza)

This study investigated vegetable consumption patterns, interest in vegetable production, opinions on urban agriculture, and barriers in the metropolitan city of Mendoza, Argentina. Using quantitative research methods and a citizen survey, the results showed strong interest from citizens in urban agriculture, but also identified barriers such as lack of time and resources.

Miriam Williams, Lillian Tait · · Australia (Sydney)

This chapter reflects on how attention to care helps understand the hopes and troubles shaping Community Food Initiatives (CFIs) in unequal worlds. Drawing on data from a 2019 research project documenting CFIs across metropolitan Sydney, Australia, the chapter analyzes two initiatives: the Addison Road Community Centre Organisation (ARCCO) Food Pantry and Five Serves Produce Community Support Agriculture Scheme (CSA). The analysis reveals expansive communities involving human and non-human others that are cared for, cared about, and cared with CFIs, highlighting the complexities of care in unequal contexts.

Maria Sulimma · Ecozon European Journal of Literature Culture and Environment · Global

This article examines "feminist gentrifier memoirs," specifically Anne Elizabeth Moore’s Gentrifier (2021) and Vikki Warner’s Tenemental (2018), focusing on gardening practices. It explores the writers’ conflicted positions in gentrifying neighborhoods and their complicity in processes of displacement and real estate speculation, despite benefiting from urban sustainability measures like urban farms and gardens. The texts engage with complex emotions arising from their white privilege and homeownership.

Marek Hekrle, Jan Macháč, Lenka Dubová · Resources · Czechia

This study investigated how ecosystem services (ES) provided by the community garden 'Žížala na Terase' in Czechia are affected during crises related to the COVID-19 pandemic and increased food prices. Results indicated that the importance of social interaction and educational ES significantly decreased in the COVID-19 scenario. Conversely, the role of community gardens as places for recreation increased. In the food self-provisioning scenario, provisioning ES increased at the expense of recreational ES. Economic assessment further showed that cultural ES were the most monetarily valued, followed by provisioning ES.

Mansi I. Bhati and R.K. Dubey · Zenodo (CERN European Organization for Nuclear Research) · Global

Urban horticulture, a new concept for growing family-sufficient food in urban and peri-urban areas, is gaining importance. However, environmental challenges for urban farming in urban environments include soil contamination, micro-climate alteration and air pollution, and contaminated water resources. Appropriate guidelines for urban and peri-urban agricultural practices are required.

Seongeun Lee, Seongmin Shin, Hansol Lee, Mi Sun Park · International Journal of Agricultural Sustainability · Global

A systematic review of urban agriculture (UA) case studies identified conditions enabling and constraining UA development across different country income groups. For high-income countries, a lack of farmers' knowledge and urban development are significant challenges to UA implementation. Common requirements for all income levels include motivation, labor, policy, social capital, and arable land.

Annie Stéphanie Nana, Timo Falkenberg, Andrea Rechenburg, Joshua Ntajal, Juliet Wanjiku Kamau, Anne Ayo, Christian Borgemeister · Environmental Geochemistry and Health · Cameroon (Yaoundé)

This study assessed the seasonal characteristics and ecological risks of potentially toxic elements (Cu, Pb, Zn, Cd, Cr, Ni) in urban agricultural soils across four lowlands in Yaoundé, Cameroon. Concentrations of Cu, Pb, Zn, and Cr exceeded recommended thresholds in some or all areas, with Cr exceeding thresholds in all areas during both seasons. One area recorded strong soil pollution (grade V) during the wet season, indicating that preventive action is needed to limit heavy metal contamination in the lowlands of Yaoundé.

Emelie Larsson, Katarina Giritli Nygren · Journal of Risk Research · Global

This study analyzed strategy documents and municipal website information to examine how municipalities frame urban gardening as a risk-reduction strategy, using critical discourse analysis. It identified two discourses: an eco(no)logical risk discourse addressing ecological risks within a capitalist market logic, and a social risk discourse focusing on gardening for work training. The findings reveal that top-down urban garden initiatives highlight contemporary inequalities in urban spaces.

Issaka Senou · Journal of Applied Biosciences · Burkina Faso

This study assessed heavy metal bioaccumulation in cabbage grown on the Dogona market garden perimeter in Bobo-Dioulasso, Burkina Faso, using a randomized block design with urban solid waste treatments. The results showed high levels of cadmium, copper, and lead in cabbage leaves, with concentrations significantly exceeding WHO standards across all treatments. A critical finding was that consuming this cabbage poses a high health risk to consumers due to significant ingestion of cadmium and lead.

Deni Permana · ANTASENA Governance and Innovation Journal · Global

This analysis evaluated the impact of school garden programs on students' nutritional status and nutritious food intake, using surveys, interviews, and nutritional status measurements before and after program implementation. School gardens positively impacted students' nutrition knowledge and increased fresh fruit and vegetable consumption, contributing to a reduction in malnutrition prevalence with significant increases in children's weight and height. However, the program's success was constrained by budget limitations and a lack of training for educators, highlighting the need for adequate training, stable financial support, and curriculum integration.

Catharina Any Sulistyowati, Suraya Afiff, Muhammad Baiquni, Mia Siscawati · Agroecology and Sustainable Food Systems · Global

A literature study conducted from October 2021 to June 2022 identified challenges in the development of Community Supported Agriculture (CSA). Farmers face expenses for sustainable practices and labor shortages, while CSA members encounter issues with time commitment, cost, and adapting food consumption habits. Organizational challenges include member recruitment and retention, competition, and CSA sustainability.

Victorine Dréau · EcoRev · Colombia

In Bello Oriente, Medellin, Colombia, displaced peasant communities resist extractivist expansion and neoliberal territorial reconfiguration through practices like urban agriculture, reasserting collective land use. This research reveals a struggle to reclaim land from the control and speculation logics of criminal gangs and urban planning institutions, indicating critical governance issues.

Katarzyna Świąder, Dražena Čermak, Danuta Gajewska, Katarzyna Najman, Anna Piotrowska, Eliza Kostyra · Sustainability · Global

This review analyzed opportunities and constraints for creating edible cities and accessing wholesome functional foods sustainably. While urban food production methods like controlled-environment farms and home gardens exist, significant constraints include pollution, a lack of government support, and economic challenges for urban farms. These issues must be resolved for edible cities to become widespread.

Mareike Schwarz · Street Art & Urban Creativity · Global

This paper analyzes the intersection of urban art and community gardens to explore whether commons can emerge from this collaboration. Through a comparative study of two community garden projects in Berlin and Dakar, the research examines the impact of funding structures, accessibility, artistic concepts, and design on commoning. Findings reveal that the two projects differ significantly in their development context and underlying structures, affecting their ability to function as commons. Furthermore, the paper argues that the dependency of artistic involvement on third-party funding contradicts the principles of commoning.

Pekka Ilmari Niskanen · Ruukku Studies in Artistic Research · Global

This paper examines three gardens—a Sahrawi sandoponic garden in Algerian refugee camps, a Helsinki Sandoponic Garden, and the Jardin Truillot in Paris—as sites for community gathering and addressing trauma. The Helsinki garden, a project by PHOSfate, highlights injustices faced by the Sahrawi population and the Baltic Sea, linking refugee status to phosphate mining and eutrophication. The study argues that recognizing injustice is central to the activism in these gardens and related practices.

Guilherme Raj, Giuseppe Feola, Hens Runhaar · Agriculture and Human Values · Portugal

This comparative case study of three Community-Supported Agriculture (CSA) initiatives in Portugal analyzed how power shapes transformations to postcapitalist work relations. Results showed that while CSA creates non-alienated, non-monetized, and care-filled postcapitalist work relations, they insufficiently unmake unbalanced power relations established in capitalist work relations. The selected CSA initiatives could benefit from actively deconstructing internal hierarchies, decentralizing decision-making power from farm owners, and addressing oppressive power relations ossified in their local and cultural context when establishing postcapitalist work relations.

Juan Camilo Ochoa Céspedes · Entorno Geográfico · Colombia (Medellín)

This paper critically analyzes peri-urban and peri-urban agriculture, addressing problems of territorial tension resulting from the accelerated expansion of real estate into peri-urban areas due to low urban land availability. The discussion questions the economic, environmental, and social risks of this expansion, highlighting tensions and resistance. The paper illustrates these issues with examples from the peri-urban area of Medellín and its metropolitan area.

Naoual Zerrari, Naoual Raïs, Mustapha Ijjaali · Soil and Sediment Contamination An International Journal · Morocco (Fez)

Nine soil samples from agricultural soils in Fez-Upstream, Morocco, were analyzed to assess concentrations of major elements, Rare Earth Elements (REEs), and heavy metals. The soils were enriched by light REEs, and the contamination factor and degree of contamination indicated moderate and low contamination, respectively. However, all sampling sites showed PLI values above 1, indicating obvious anthropogenic pollution due to human activities.

CHRISTINA FELIX KIFUNDA · Asian Journal of Agriculture · Tanzania

Combining 30 years of temperature and rainfall data from the Tanzania Meteorological Agency with a questionnaire survey of 386 urban-agriculture households across five wards of Kinondoni City (Bunju 118, Kunduchi 42, Mabwepande 102, Mzimuni 28, Wazo 96), plus focus group discussions, key informant interviews and direct observation, this study examined climate change's effects on urban crop production and farmers' adaptation strategies. More than 70% of surveyed smallholder farmers were aware of climate change indicators, consistent with the meteorological data, citing rising temperature (76%) and declining rainfall (73%); pests and diseases were ranked highest (88%) among significant climate-change effects. Land scarcity was also identified as a significant challenge for urban agriculture, and pesticide and fertilizer use was the most commonly cited adaptation strategy (65%).

Luiza Vigne Bennedetti, Paulo Antônio de Almeida Sinisgalli, Maurí­cio Lamano Ferreira, Fabiano Lemes de Oliveira · International Journal of Environmental Research and Public Health · Global

Following the PRISMA protocol, a 2023 systematic review evaluated 26 studies on the interplay between urban agriculture (UA) and sustainability surveyed on Web of Science. While UA is increasingly recognized as an action to promote urban sustainability and inform public health policy for urban populations, the review confirms that its implementation still presents challenges in countries across both the Global North and Global South. The review identified numerous key challenges to UA adoption, including air and soil contamination, availability of green areas, layout of urban infrastructure, and food distribution, among others. Given the many socio-economic and environmental contextual factors involved — especially when comparing Global North and Global South realities — the review concludes there is a need to develop a model adaptable to these different contexts. It further concludes that the concept of sustainability lacks a universal understanding, and that one of the most important remaining gaps is addressing social issues in relation to environmental ones.

Lukas Egli, Judith Rüschhoff, Joerg A. Priess · Frontiers in Sustainable Food Systems · Global

A systematic review of quantitative empirical research on the sustainability effects of community-supported agriculture (CSA) covered 39 studies. Fewer than 30% of the studies assessed ecological sustainability aspects, but where CSA farms were compared to reference systems, they mostly performed better on resource use efficiency and greenhouse gas emissions. Most studies assessed social aspects; many showed that CSA still fails to reach low-income households, so members do not represent the average population, while CSA membership was associated with improved health and sustainability behavior. Economic variables were assessed in more than half of the studies, but knowledge of CSA's relative economic performance remains scarce, though early studies indicate high economic viability. The review calls for more research on ecological aspects specifically, comparisons across farming and marketing systems, and integration of knowledge from theses and practical sources in multiple languages.

Aikaterini N. Martini, Μ. Papafotiou, Ioannis Massas, Nikoleta Chorianopoulou · Plants · Greece

Origanum dictamnus, a perennial herb endemic to Crete, Greece, was grown at two cultivation sites in Athens — an extensive green roof and ground level next to a moderate-traffic road — in two substrate types at 10 cm depth, to examine growth along with nutrient content (N, P, K, Na) and heavy metal accumulation (Cu, Pb, Ni, Mn, Zn, Fe) in its tissues. Plant growth was favored by the soil substrate but was also satisfactory in the soilless substrate. Cultivation site affected heavy metal accumulation, with higher concentrations found in leaves and flowers at street level, though no differences appeared in roots. Washing reduced heavy metal concentrations only in leaves grown at street level. Substrate type significantly affected manganese concentration in all tissues and iron concentration in roots, with the highest values in the soil substrate. The species could be cultivated on sustainable green roofs, preferably on a soilless substrate to reduce structural weight, but careful selection of the cultivation site was identified as necessary to minimize contamination with environmental pollutants when human consumption is intended.

Arun Kafle, James Hopeward, Baden Myers · Sustainability · Global

An integrated modelling framework using proxy measures for economic benefit (net margin), social benefit (full-time farmer employment equivalent per consumer) and environmental benefit (CO2 emission reduction) was applied to two contrasting development settings, Adelaide, Australia, and the Kathmandu Valley, Nepal, to examine the characteristics of urban agriculture (UA). Using two-stage optimisation across three mechanisation levels (non-mechanised, garden tiller, garden cultivator), two purposes (gardening or commercial), two crop-value categories and two market mechanisms, the model found that no single UA form maximises economic, environmental and social (employment) objectives simultaneously: commercial UA, in which both land and labour are costed, was favoured for maximising profit or reducing CO2 emissions, while gardening-form UA was favoured for maximising employment participation. In Adelaide the model favoured commercial UA for best-case profit and carbon emissions but gardening UA for employment maximisation, while in the Kathmandu Valley the model selected gardening UA under the given assumptions.