Research & reports

Daniela Haluza, Julia Ortmann, Tanja Lazic, Jonas Hillmer · Sustainability · Global

This study conducted a bibliometric analysis of urban gardening research from 1991 to 2020 using VOSviewer. The field has grown steadily since the early 1990s, with a shift in focus over the last two decades from poverty and food security to the impact of urban gardening on human well-being and quality of life, predominantly in developed countries. Recent studies indicate differentiated impacts of urban gardening on various socioeconomic groups. Despite robust evidence of public health benefits, policy implementation remains limited, and researchers emphasize the need for more quantitative data to inform decisions.

Ana Zepeda, Maria C. Ortíz-Rivera, Clare Cannon, Amanda Crump · The Professional Geographer · United States

This research, conducted in San Juan, Puerto Rico in July 2019, investigates how women experienced the impacts of Hurricane Maria on their urban farms (huertos urbanos). Findings show that while many women enjoy urban farming and it provides fresh produce, almost all women farmers experienced a decline in volunteer participation a few years after the farms' establishment and even more so after Hurricane Maria. Despite this, many women described the urban farms as very important for community food cultivation and gathering.

Juan Diego Torres, Sara R. Jaeger, Patricia Puerta, Amparo Tárrega · Applied Food Research · Spain

This study investigated Spanish consumers' perceptions of five lettuce cultivation systems using explicit and implicit methods with 105 participants. Local/small agriculture was most favorably regarded, while urban community gardens were perceived as less safe for lettuce production. High-tech greenhouses were considered safer but less sustainable, and vertical indoor farming elicited a surprise reaction due to low familiarity.

E. Ryan Harrelson, Qingyue Zeng, Mairui Gao, Magaly Toro, Ryan A. Blaustein · Frontiers in Plant Science · United States (Washington, D.C.)

This study analyzed 87 multidrug-resistant (MDR) bacterial strains from leafy greens (n=29), root zone soil (n=42), and bulk soil (n=16) in Washington, D.C. urban agriculture systems using whole genome sequencing. The isolates, spanning 4 phyla and 14 genera, carried diverse antimicrobial resistance genes (ARGs) and mobile genetic elements (MGEs). The results indicate that MDR bacteria are present in urban agriculture systems, including on fresh produce, dominated by soil-associated taxa carrying diverse ARGs and MGEs, which suggests implications for resistance mobilization.

Tinashe P. Kanosvamhira · Journal of Agriculture Food Systems and Community Development · South Africa (Cape Town)

This study investigated the motivations for urban gardening among low-income residents in Cape Town's Cape Flats, South Africa, using survey data from 97 participants and interviews across 34 community gardens. While 29 out of 34 gardens prioritized income generation, a tension was found between institutional economic objectives and individual gardeners' motivations. Although 76.3% cited economic reasons, all respondents also valued social, health, and environmental benefits, perceiving gardening as a means to enhance well-being and promote sustainable practices despite structural barriers.

Victoria Milka Santiago · International Journal of Research and Innovation in Applied Science · Philippines

This qualitative case study explored the implementation and sustainability of the Gulayan sa Paaralan Program (GPP) in a public secondary school in Misamis Oriental, Philippines. Data from interviews, focus groups, and artifact analysis revealed that GPP's success relied on strong curriculum integration, stakeholder ownership, innovative farming, and regular monitoring. Identified barriers included limited infrastructure, funding gaps, and inconsistent administrative backing.

Bhoirab Gogoi, Shourov Dutta, Trishnalee Saikia, Rituparna Saikia, Sanjoy Borthakur, Manoranjan Neog · International Journal of Research in Agronomy · Global

A comprehensive review synthesized literature on the taxonomic diversity, cultivation practices, nutritional and phytochemical composition, health benefits, and postharvest management of microgreens. Microgreens possess significantly higher concentrations of vitamins, minerals, and antioxidants than their mature counterparts. For instance, radish microgreens contained 147 mg of vitamin C per 100g fresh weight, red amaranth microgreens offered up to 50 mg of iron, and sunflower microgreens provided around 65 mg of calcium.

Lori Leigh, Edward Randal, Amber Logan, Karen Witten, Crystal Victoria Olin, Elinor Chisholm, Philippa Howden‐Chapman · Local Environment · New Zealand

An Indigenous-led community garden (māra kai) in an urban social housing environment in New Zealand was examined. Guided by an Indigenous model of wellbeing and using go-along interviews, the study found that this community initiative uplifted the autonomy, confidence, and wellbeing of community housing residents. This was achieved by fostering healthy relationships with themselves, their immediate community, and the wider community across the city.

Doreen N. Meso, Enos W. Wambu, Gelas Simiyu, Shem M. Mwasi, Thomas Munyao · Discover Environment · Kenya (Kakamega Town)

This study assessed heavy metal pollution in agricultural soils, water, and pumpkin leaves from 21 sites across three zones in peri-urban Kakamega Town, Kenya. It found cadmium pollution in all water samples, and lead and nickel pollution in sections of soil and leafy vegetable samples. Lead pollution was linked to vehicular emissions near the town center, while cadmium enrichment in informal settlements implicated inadequate waste management. Sequential extraction showed 31–35% of soil cadmium was in exchangeable fractions, posing a risk of bioavailability, highlighting persistent heavy metal contamination with implications for public health, environmental sustainability, and agricultural productivity.

Richa Joshi, Jagneet Kour, Raino Bhatia · · Global

This chapter will investigate sustainable practices, including green infrastructure like urban forests and community gardens, to improve urban environments and address intertwined challenges. It will examine how green infrastructure enhances air and water quality, creates recreational spaces, and fosters community well-being. The chapter will also explore integrating environmental policies with public health initiatives through sustainable urban planning to create resilient communities with equitable access to green spaces, enhanced public transportation, and clean energy.

Mateus Andrade Rocha Vitório, Victor Guilherme Pereira da Silva Marques, Rivanna Sousa Moura, Sarah Lays Campos da Silva, Fernanda Raquel Andrade da Silva Dos Santos, Diego Rodrigues de Sousa, Sabrina Amorim Paulo, Michelle Vicente Torres · Revista Multidisciplinar do Nordeste Mineiro · Brazil (Teresina)

This qualitative experience report describes the "Hortiviva" project, conducted from April to December 2024, by residents of the Family Health Residency Program at the State University of Piauí, Brazil. The project involved 15 to 30 family horticulturists in a community garden in northern Teresina, focusing on health education through monthly meetings and active methodologies. Results showed the community garden became a therapeutic space for socialization, income generation, and well-being, strengthening ties between professionals and the community.

Dariusz Gruszka, Katarzyna Szopka, Cezary Kabała · Land · Poland (Wroclaw)

This study in Wroclaw, Poland, investigated the quality of constructed technogenic soils in urban gardens located on a reclaimed clay pit. Despite beneficial physicochemical properties and high fertility in the topsoil layers, the soils were seriously contaminated with trace elements, including zinc (up to 1700 mg kg−1), lead (920 mg kg−1), copper (740 mg kg−1), cadmium (5.1 mg kg−1), mercury (7.4 mg kg−1), and arsenic (5.1 mg kg−1). This contamination, likely from industrial and urban waste used for mine infilling, compromises soil quality and poses potential health and ecological risks.

Babatunde S. Adedotun, Martin Binde Gasu, Ismail A. Oyerinde, Dele Sunday Ogundahunsi, Oluwatoyin David ADEDOTUN · The Journal of Agriculture and Development · Global

This research conducted an extensive literature review on the correlation between urban agriculture and the quality of life of urban residents, synthesizing 20 peer-reviewed scholarly papers published between 2010 and 2022 from databases like Scopus. Urban agriculture was shown to offer economic benefits, community engagement, health improvements, environmental benefits, and cultural connections, but also presented negative externalities such as resource exploitation, contamination, and ecosystem disruption.

Lucas Velasques, Janaína Wohlenberg, Osmar Manoel Nunes, D. Friedrich, Norton Víctor Sampaio · Revista Científica Agropampa · Brazil (Dom Pedrito/RS)

This field study, involving 20 residents of Dom Pedrito/RS, Brazil, who practice home gardening, aimed to identify motivational factors, difficulties, and benefits. The main difficulties reported were the time required for cultivation and the presence of pests and insects. While benefits included consuming healthy food, health improvements, and supermarket savings, the significant challenges of time commitment and pest management indicate limitations to the widespread positive impact of home gardening.

Haofan Xu, Peng Hu, Hailong Wang, Peter Croot, Zhiwen Li, Cheng Li, Shaowen Xie, Hongyi Zhou, Chaosheng Zhang · Environmental Pollution · China

This study in Gaoming county, China, integrated PMF and K-means clustering to identify sources and contamination patterns of 8 potentially toxic elements (PTEs) in peri-urban agricultural soils. Average concentrations of PTEs were reported, with PMF identifying geogenic, industrial/traffic-related, and agricultural sources. The highest PTE concentrations were found in urbanized zones, confirming significant human impact and underscoring the dual influences of agriculture and urbanization on PTE contamination.

Daniel de Araujo Barbosa, Renata Rodrigues Gomes, Jesuana Oliveira Lemos, Joyce de Oliveira Vieira · Contribuciones a las Ciencias Sociales · Brazil (Federal District)

An exploratory study in Águas Claras, Federal District, Brazil, investigated the mental health impacts of participating in the "Terraterapia" community garden group. Using mixed methods with semi-structured questionnaires for 10 participants, the study found a significant improvement in self-assessed mental health, with an initial average of 6.2 rising to 9.4. Participants reported reduced anxiety and loneliness, emphasizing community bonds, socialization, and garden management as central to the intervention's success.

Diane Keen · Global Qualitative Nursing Research · Global

This participatory action research explored ways to enhance the well-being of four young adults with developmental disabilities and five older adults through intergenerational interaction in a community garden. Using semi-structured interviews, participant observation, and field notes, the study identified five themes of well-being: engagement, positive relationships, accomplishment, meaning and purpose, and positive emotion. The research found that enlisting the wisdom of older adults enhanced the well-being of both young adults with developmental disabilities and the older adults themselves.

Chris Blythe, Silvio Caputo, Michael Hardman, Paul Milbourne, Victoria Schoen · Kent Academic Repository (University of Kent) · United Kingdom

This chapter examines the impact of urban food growing on individual, household, and community resilience, well-being, environment, and local food systems in the UK during and beyond the COVID-19 pandemic, drawing on survey and research data. It discusses the potential role of urban food growing in post-pandemic food security, environment, health, and society, and considers how "crisis gardening" experiences are leading to calls for new approaches to urban food growing in the UK.

Ebenezer Boahen · Discover Agriculture · Ghana

This study assessed the awareness and practices of 50 purposively selected vegetable farmers along the Accra-Tema Motorway, Ghana, regarding heavy metal contamination from vehicular emissions and its potential health implications. Data were collected through structured questionnaires and one-on-one interviews. Results showed that 96% of the farmers were unaware of heavy metal contamination, though 80% expressed a willingness to discontinue farming near the motorway if they were informed of the risks. Farmers face challenges such as limited access to clean irrigation water and dependence on informal agricultural knowledge. The study highlights the urgent need for targeted educational interventions to raise awareness about the risks of heavy metal exposure and to encourage safer farming practices.

Jeffery W Bentley, Paul Van Mele · CABI eBooks · Global

Supermarkets dominate the food market, resulting in lower prices for farmers and the decline of smaller shops, impacting local sourcing and quality. The abstract states that consumers and local governments can support family businesses, farm shops, and farmer markets, with examples from France to Ecuador. Allotment gardens and innovations like the Belgian ‘Juice Mobile’ are also noted for providing fresh food, social interaction, exercise, and a connection to nature.

An The Huynh, Ho Bich Lien, Đức Đạt Đức Nguyễn, Đào Minh Trung · Tạp chí Khoa học Đại học Công Thương. · Vietnam

A study in Tan Uyen City, Binh Duong Province, assessed the potential for reusing treated domestic wastewater for urban agriculture. Data from the city's wastewater treatment system showed high efficiency, with COD reduced by 94.49% and BOD5 by 97.1%. The treated water met QCVN 39:2011/BTNMT requirements and is suitable for irrigating landscape greenery, vegetables, or short-term industrial crops.

Chiara Tornaghi · · Global

This chapter, based on 15 years of research, identifies key shortcomings in urban planning policy that prevent urban agriculture from reaching its full potential for human and non-human health. These include the failure to recognize urban agriculture as food production, the invisibility of soil and its role, and the neglect of soil care and food production specialists in public land design and soil management. The chapter suggests that agroecological considerations can enhance urban agriculture's ambition in public spaces.

Westone Hamwata, Mwendalubi Hazyondo, Victor Daka, Mbanga Muleba, Nzooma M. Shimaponda-Mataa · BMJ Open · Zambia

A cross-sectional study in urban and periurban areas of Ndola district, Zambia, assessed malaria vector behavior and insecticide resistance. Urban agriculture practices created highly productive mosquito breeding sites like irrigation trenches and garden ponds, where Anopheles funestus s.s and Anopheles gambiae s.s coexisted. Anopheles gambiae s.s showed high resistance to pyrethroids, carbamates, and organochlorines, indicating that urban agricultural practices increase the risk of sustaining malaria transmission year-round.

Jasmine C. Barredo, Sarah G. Colbert, Ada F. Dhaouadi, Samhitha Kolapalli, Elaina Y. Wi · VTechWorks (Virginia Tech) · Global

This literature review evaluates three community strategies involving diet and exercise to mitigate symptoms of Polycystic Ovary Syndrome (PCOS). The strategies include food-access programs connecting SNAP with Community Supported Agriculture for healthy meals, pricing policies like taxes on high-sugar beverages and subsidies for healthier foods, and structured community exercise programs. These interventions aim to improve PCOS by alleviating symptoms such as insulin resistance and irregular menstruation.

Mellany N.C. van Bommel, Marthe L. Derkzen, Lenneke Vaandrager · Wellbeing Space and Society · Europe

This mixed-methods study aimed to understand the meanings attributed to green citizen initiatives in the Netherlands by using the concept of sense of place and to investigate which factors predict this sense of place. Surveys (n=130) were used alongside interviews with 38 participants from ten green citizen initiatives. Findings demonstrate a strong sense of place among participants, which was significantly predicted by meaningful experiences, a sense of safety within the initiative, and length of involvement. Participation in green citizen initiatives appears to create meaning across place attachment, place identity, place dependence, and a broader societal meaning of place.