Research & reports

Byamungu Lincoln Zabuloni, Maxwell Mudhara, Joyce Chitja · Food and Energy Security · South Africa

A study assessing the impact of home- and community-garden programs on household food security status in uMzumbe Local Municipality, KwaZulu-Natal, South Africa, using random and purposive sampling to survey 223 respondents with a structured questionnaire and a Tobit regression model to examine determinants. Total income (p<0.001), extension services (p<0.01), credit access (p<0.05), age, farm size (p<0.01) and education level (p<0.05) positively affected food security status, while household size (p<0.001), home gardens (p<0.01) and community gardens (p<0.01) negatively affected it. The study concludes that implementing home and community garden programs alone was not enough to improve households' food security status in uMzumbe Municipality.

Fetty Dwi Rahmayanti, Andi Gunawan, Anas Miftah Fauzi, Edi Santosa · Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) · Indonesia (Jakarta)

A mixed-methods study assessing biodiversity risk from urban agriculture activities in East Jakarta, Indonesia, combining a literature review with a field survey of questionnaires on respondents' perceptions of biodiversity risk to flora and fauna. The results showed the p-value exceeded the alpha level (0.05), indicating that urban agriculture in East Jakarta does not significantly affect biodiversity risks to flora and fauna.

Sarah Corcoran, Rachael Condley, Rachel A Liebe, Tuba Khan, Jillian Joyce, Deana Hildebrand, Ashlea Braun · Journal of Hunger & Environmental Nutrition · United States (California)

At a hybrid food and resource center with an attached community garden in California, USA, a longitudinal, sequential explanatory mixed-methods study of 30 patrons (mean age 45.9, 73.3% women) combined quantitative measures (survey and skin carotenoids) with qualitative semi-structured interviews to examine barriers to and facilitators of fruit and vegetable intake. Skin carotenoid levels, a biomarker of fruit and vegetable intake, were largely unchanged before and after (P = .51); among the 26 participants interviewed, facilitators cited included perceptions of quality and alignment with health goals, while barriers included mental health and competing priorities, leading to the conclusion that programs aiming to improve fruit and vegetable intake should prioritize non-diet determinants.

Ioana Florea · · Global

This chapter finds that while collective urban gardening projects represent forms of resistance against market-based food systems, the precarization of urban natures, and real-estate dominance, their everyday practices often fail to deliver on these ideals and intentions, generating incomplete, contradictory, or temporary results. It proposes a heuristic frame linking space, time, and class to review prior urban-gardening research from a political-ecology perspective, tracing how space's materiality, time embedded in plant growth, and class differences conditioning gardeners' access to space and time produce these contradictions.

Fadhil Adi Nugraha, Ira Malihatun, Siwi Gayatri, Titik Ekowati, Sumarsono Sumarsono · AGRICOLA · Indonesia

In Semarang City, Indonesia, a survey of 86 farmers from four Women Farmer Groups (KWT) who received the government's Sustainable Food Yard (Pekarangan Pangan Lestari) program — using questionnaire interviews, descriptive analysis, and a literature review — assessed the program's social, economic, and environmental impacts. The social impact was rated "less" (score 31.10%), the economic impact "low" (28.88%), and the environmental impact "very low" (18.60%). The program strengthened social relations among farmers but was not effective in improving farming skills or public health; economically it had potential to contribute to household expenditure but had not optimized income growth or job creation; and its environmental impact remained limited, particularly in preserving biodiversity and reducing chemical use.

Ministry of Sustainability and the Environment, Singapore · Ministry of Sustainability and the Environment, Singapore · Singapore

On 26 September 2025, Minister Grace Fu replied to a parliamentary question on progress toward the "30 by 30" goal, stating that less than 10% of Singapore's food consumption is currently produced domestically. She called the goal "aspirational," set before COVID-19 under more favourable conditions, while noting locally produced hen eggs exceed 30% and beansprouts exceed 50% of local consumption, and that the alternative protein industry faces high energy costs and insufficient consumer acceptance.

Saputra A., Abdoellah O., Utama G., Wulandari I., Mulyanto D., Suparman Y. · Sustainability · Indonesia

Interviews and a survey examined how residents of Bandung perceive the ecosystem services of homegarden-based urban agriculture. Residents themselves judged the gardens' contribution to overall food security to be only supplementary, even though they supply fresh produce. Their value was widely recognised elsewhere: biodiversity conservation, microclimate regulation, disaster risk reduction, social cohesion and mental well-being. Limited space, lack of knowledge and competing land uses emerged as the barriers, and the authors conclude that education and policy support are the levers for wider uptake.

Wendy Demark-Wahnefried, Robert A. Oster, Kerry P. Smith, Harleen Kaur, Andrew D. Frugé, W. Walker Cole, Julie L. Locher, Gabrielle B. Rocque, Maria Pisu, Jennifer R. Bail, Harvey Jay Cohen, Douglas R. Moellering, Cindy K. Blair · JAMA Network Open · United States (Alabama)

A randomized trial in Alabama, USA, assigned 381 older cancer survivors (mean age 69.8 years, 69.0% female) with suboptimal vegetable and fruit intake, physical activity or physical function to a one-year home vegetable gardening intervention (supplies plus mentoring by certified master gardeners) or to a waitlist. The primary outcome — a composite index of improvement in vegetable and fruit intake, moderate-to-vigorous physical activity and physical function — did not differ significantly (4.5% intervention vs 3.1% waitlist, P=.53), nor did vegetable and fruit intake between arms (mean difference 0.3 servings/day, P=.10). The intervention arm did show significant gains in physical performance (2-minute step test +6.0 steps; 30-second chair stand +0.8 repetitions), perceived health (+8.4 points on a 100-point scale) and gut microbiome alpha diversity. The COVID-19 pandemic significantly moderated effects, so the trial does not establish that gardening halts functional decline in older adults.

Sreejith Aravindakshan, Hage Aku, Michi Tani · · India

This study investigated factors inducing the emergence, sustenance, and sustainability of urban agriculture using primary data from urban farming households in Kerala and Arunachal Pradesh, India. The research indicates that urban agriculture has provided questionable environmental gains and has not significantly improved urban food security, especially among the poorer sections.

Prajal Pradhan, Daya Raj Subedi, Kshitij Dahal, Yuanchao Hu, Prakriti Gurung, Sijal Pokharel, Sagar Kafle, Biplav Khatri, Sudeeksha Basyal, Monika Gurung, Aruna Joshi · Cell Reports Sustainability · Global

This systematic analysis of 1,450 urban agriculture publications examined its impacts on Sustainable Development Goals (SDGs). It found urban agriculture is linked to all SDGs, with 142 targets showing positive sentiments and 136 showing negative sentiments, with positive sentiments roughly double the negative. The study concludes that urban agriculture does not inherently contribute to sustainability, as its impacts depend on specific practices and require tackling identified hurdles.

Laura S. Tuominen, Heikki Helanterä, Patrik Karell, Lauri Rapeli, Timo Vuorisalo, Jon E. Brommer · npj Urban Sustainability · Finland (Turku)

This before-after study in Turku, Finland, examined the influence of the COVID-19 pandemic on urban box gardening from 2019 to 2021. While box gardening's importance for resilience increased and gardeners remained motivated, participants reported receiving fewer benefits from gardening during the pandemic. This suggests a negative influence of the pandemic on well-being, extending to urban gardening outcomes.

Heidi L. Hollingsworth, William D. Giblin · Journal of Research in Childhood Education · Global

This mixed methods study investigated the impact of a middle school garden project on 6th-graders’ school connectedness. Surveys of 46 middle school students indicated that most had home gardening experience and enjoyed the school garden activities. However, pre-post results did not show increased school connectedness following the garden unit, as ratings were moderately high both before and after. Interviews with 25 participants revealed that the garden project facilitated home-school, student-student, and student-teacher connections, serving as a context for engagement and enjoyment for students.

Melissa Anna Murphy, Pavel Grabalov · ˜The œGeojournal library · Europe

A study of urban agriculture initiatives in Aarhus, Denmark, and Rotterdam, the Netherlands, explored how municipalities facilitate urban agriculture and its performance in public spaces. It identified four public service trajectories: increasing access and animation, contributing to social services, producing and distributing food, and building communities. The study found that food production and social services may be little suited for urban spaces requiring high public access, although benefits can reach a broad public if localized and facilitated appropriately.

Bernard Afiik Akanpabadai Akanbang, Millicent Awialie Akaateba, Prosper Issahaku Korah · Discover Cities · Ghana (Wa)

This exploratory cross-sectional survey in seven rapidly growing neighborhoods in Wa, Ghana, administered 285 questionnaires to residents to understand motivations, challenges, and constraints of home gardening. Results showed 56% of respondents had gardens, primarily motivated by beautification (56.1%) and food production (52.3%). Limited space (49%) and busy schedules (34%) were identified as main barriers. The study found that while garden ownership aligned with the autonomy need, the relationship need, which correlates with environmental motivations, was notably low among residents. This indicates a limited effect of environmental awareness on home gardening motivation in the surveyed population.

Cavani Guzmán, Pierina · Macedonian Journal of Medical Sciences (University of Skopje) · Peru (Lima)

This article discusses the impact of urbanization and industrialization processes on peri-urban agricultural production in the Nuevo Horizonte de Carapongo association in Lurigancho, Lima, Peru. The research analyzes the development of these phenomena and their relationship with the changes generated in the agricultural production of the area, contributing to the academic discussion on the deagrarianization process of peri-urban spaces.

Holger Braun, Dorothee Apfel, Benedikt Rilling, Carsten Herbes · Cleaner and Responsible Consumption · Germany

A study with 44 hobby gardeners in Germany found that substrates are not a major part of gardeners' social interactions, and price is the dominant purchase criterion for substrates, with sustainability not playing an important role. Although basic knowledge about peat is widespread, purchasing substrates is a utility-driven process with mostly passive information behavior.

Reina Bazán Alarcón, Edgar Leonidas Cottallat Villao, Segress García-Hevia · Código Científico Revista de Investigación · Ecuador

This mixed-methods study in Ecuador aimed to develop a methodology for implementing school gardens at Unidad Educativa Misael Olaya, focusing on short-cycle vegetable cultivation for consumption and potential commercialization by high school students. Questionnaires and interviews with students and teachers revealed that while students had basic knowledge of vegetable cultivation, there was a need to strengthen practical activities and experimental learning.

Juliette Colinas, Francesca Ugolini, Mohammad Reza Khalilnezhad · Sustainability · Iran (Birjand)

In Birjand, Iran, a qualitative approach explored the usage and perception of public fruit trees and attitudes towards public usage and participation in two urban green spaces (Tohid Park and Akbarieh Garden). Semi-structured interviews were conducted with twelve visitors, four administrators, and eight workers. Almost all visitors had a high interest in picking fruit, but usage in these green spaces was low, partly due to social norms.

Rafi Pratama, Wawan Dhewanto · International Research Journal of Economics and Management Studies · Indonesia (Bandung)

This mixed-methods study assessed the effectiveness of the Micro Urban Food Forest Campaign at Masagi Koffee, Bandung, Indonesia, in enhancing environmental sustainability and community involvement. While the initiative moderately succeeded in raising environmental awareness among participants, it faced problems in achieving consistent community participation. Logistic regression analysis identified awareness and knowledge as significant predictors of sustainability practice, indicating a need for targeted strategies to foster behavioral change.

Ivica Petríková, Melvine Anyango Otieno, Gertrude Were, Mahmoud Eltholth, Ana Rodriguez‐Mateos, Seeromanie Harding, Victoria Hall Morán, Odipo Osano, Jennifer Cole · Food Security · Kenya

This study investigated the links between peri-urban households' engagement in agriculture, their dietary behavior, and their children's nutrition outcomes around Eldoret, Kenya. Survey data collected from 518 households indicated that peri-urban households involved in agriculture, particularly crop growing and sales, had more diverse and nutritious diets than non-engaged households. However, a significant improvement in children’s health outcomes in these households was observed only when coupled with improved water, sanitation, and hygiene conditions.

Divya Martolia, Ritu Gupta, Naresh Kumar Chhuneja · Journal of Community Mobilization and Sustainable Development · India (Ludhiana)

In Ludhiana city, India, a study investigated the prevalence of hand discomfort among 150 male gardeners from educational institutions, community gardens, and nurseries. Findings revealed that the comfort level for most respondents using gardening hand tools ranged from moderate to low, with increased pain and discomfort reported after using certain tools. The Cornell Hand Discomfort questionnaire showed that the majority experienced slight to moderate pain and discomfort in different hand regions, which interfered with their work performance.

Rini Fitri, Achmad Yozar Perkasa, Hinijati Widjaja, Olivia Seanders, Reza Fauzı · Tekirdağ Ziraat Fakültesi Dergisi · Indonesia (Jakarta)

This research evaluated the sustainability of urban farming development in Petamburan, Central Jakarta, using a descriptive qualitative methodology and Multi Dimension Scaling (MDS) approach. While urban residents generally have knowledge and support for urban agriculture, the analysis of four dimensions (ecological, economic, social, technological) indicated that urban farming in Petamburan is not sustainable. The sustainability index was very low, categorized as destructive and unsustainable across ecological (14.55%), economic (13.85%), social (13.94%), and technological (13.43%) dimensions.

Shinta Prastyanti, Retno Wulandari, Adhi Iman Sulaiman · Palabra Clave · Indonesia (Yogyakarta)

This study in Yogyakarta, Indonesia, examined participatory development communication strategies in urban farming programs using observations, interviews, and focus group discussions. Findings indicate that while the communication strategy embodies community empowerment, the initiative has not been adopted by all community members. Additionally, harvests are limited to daily needs and have not significantly improved group members’ income.

Sigrid Gjøtterud, Rasa Holen, Trine Hvoslef-Eide · International Journal of Sustainability in Higher Education · Global

This action research study explored transdisciplinary teaching and learning in an urban agriculture master's program using qualitative methods. Students demonstrated high inter- and intrapersonal competencies and cross-disciplinary idea development. However, a critical finding was that the potential for collaboration with external partners (case owners) was not fully exploited and requires further development.

Margaretha Häggström, Mårten Häggström · The Trumpeter · Sweden

This four-year exploratory study in a clearcut in western Sweden investigated the feasibility of cultivating crops in a nutrient-poor, shadowless environment to support biodiversity. The study found that while it was possible to grow potatoes, peas, and some summer flowers without special efforts, it was difficult to grow other vegetables and root vegetables. The project suggests that planting activities in clearcuts may impact people's sense of human-nature identity and respect for the natural environment.