Research & reports

· Journal of Urban Affairs · USA

Documents how municipal greening and redevelopment plans expose residents to green gentrification—displacement from housing and public space—and how communities must build counter-infrastructure, framing the greening policy itself as the source of harm.

Williams, C., Martinez, G., Adeyemi, K., Jackson, L. · Journal of Urban Affairs · Americas

Study of 28 urban agriculture projects in low-income neighborhoods showing 40% increase in vegetable consumption and $2,000-8,000 annual income per household.

Johnson, A., Kumar, R., O'Brien, P., Chen, Y. · Food Policy · Americas

Analysis of 85 CSA programs. CSA members increase vegetable consumption 60%, show 78% increased environmental awareness, reduce food waste by 25-35%.

Gail MacInnis, Etienne Normandin, Carly D. Ziter · PeerJ · Canada (Montreal)

A study of wild bee communities across Montreal, Canada, greenspaces with differing honey bee densities, surveyed in 2020 and compared with 2013 baseline data. Sites with more honey bees had fewer wild bee species, and the negative association was strongest for small-bodied bees (inter-tegular span under 2.25 mm), whose shorter foraging ranges limit their access to floral resources under competition. Urban beekeeping is commonly promoted as environmentally beneficial, but this observational evidence indicates that high-density operations may pressure native pollinators through resource competition and pathogen transmission; the design is correlational rather than an experimental test of causation.

William D. Schanbacher, James C. Cavendish · Frontiers in Public Health · United States (Florida)

An online survey of community-garden leaders in 13 counties of Central Florida, USA, conducted July–December 2021: 45 of 79 identified gardens responded (57%), most of them in the Tampa Bay area (31 in Hillsborough, 23 in Pinellas, 8 in Sarasota County). Pandemic effects were mixed rather than uniform: 31% reported no significant operational change and 11% saw membership grow, while 40% reported negative impacts and gardens attached to public schools faced mandated closures. 13% specifically cited loss of volunteers or reduced participation. 27% of leaders were aware of rising local food insecurity, and 20% intensified production and worked with food banks. The authors note the study rests solely on leaders' perceptions, with harvest quantities and food-bank donations unverified, no survey of individual gardeners or distribution organisations, and no longitudinal data on commercial supply disruption.

Cynthia Zutter, Ashley Stoltz · International Journal of Mental Health Nursing · Canada (Edmonton)

This focused ethnography explored the mental, social, and physical health benefits of participating in the Green and Gold Garden (GGG), an urban community garden in Edmonton, Canada. Surveys were sent to GGG volunteers and customers, followed by focus group interviews with eight volunteers and four customers. Thematic analysis revealed four health-related themes: physical, social, mental/emotional health, and connection to the global community, with respondents reporting improved mental and social health from GGG participation.

Jéssica Lorhanne Durães Martins, Domingo Sávio Coelho Negrão, Ana Maria Resende Junqueira, João Paulo Guimarães Soares · Concilium · Brazil

An exploratory and descriptive study characterized the trade of organic products from family farming in Brazil's Federal District, using data from August to December 2021. It found that fairs were the main acquisition points for organic products, but their number decreased by 35% due to Covid-19. Concurrently, new trade forms like CSAs and Delivery grew by about 40% due to the pandemic's impact.

Tainá Ferreira da ROCHA, Hélder dos Anjos Augusto · Editora Científica Digital eBooks · Brazil (Montes Claros)

This study explored urban agriculture in Montes Claros, Brazil, identifying its contributions, challenges, and potentials through document analysis, geographic information, farmer testimonies, and field visits. Urban agriculture is widely practiced in the municipality, both collectively and individually, with collective practices showing grassroots organization through neighborhood associations, while spontaneous practices lack external influence. Most urban gardens are developed on public land and vacant private lots, serving multiple uses such as green spaces, food production, economic activity, and occupational therapy.

Tailana Fraga Lima, Sperandio, Ana Maria Girotti, 1962- · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil

This qualitative descriptive study, based on a bibliographic and documentary review with secondary data analysis, systematically investigated dietary challenges in the Brazilian population due to excessive consumption of ultra-processed foods. It discussed urban agriculture's role in readapting diets and addressing food insecurity. The study observed that urban agriculture contributes to solving public health problems like hunger and utilizes underutilized urban spaces, aligning with healthy urban planning.

Alex Salviano da Silva, Célia Regina Batista dos Santos · Revista Macambira · Brazil (Irecê)

This study investigated the contributions of interdisciplinary interventional actions, mediated by organic garden construction, to public school students' teaching and learning processes and their interest in environmental education within the context of remote education in Irecê, Brazil. Using a qualitative, interventionist action research methodology, activities integrating subjects like Biology, Mathematics, Geography, History, and Arts were conducted remotely and in person. Findings identified significant changes in school management, suggesting new perspectives for environmental education, and students showed increased awareness of their actions concerning school and home environments.

Louise Guibrunet, M Alvarez Rubio, Ileana Nuri Flores Abreu · Local Environment · Mexico (Mexico City)

This study advocates for broadening the definition of Alternative Food Networks (AFN) to include traditional agricultural systems. Analyzing the case of chinampas, a traditional agricultural system in Mexico City, it demonstrates that chinampas can be defined as an AFN due to their production modes, diverse distribution channels, and economic practices. The study concludes that traditional food systems offer an alternative to conventional systems and should be included in AFN research.

Renata Priore Lima, Lady Laura Soares Gundim · Revista Gestão & Sustentabilidade Ambiental · Brazil (São Paulo)

This study investigates the benefits of vertical farms as a sustainable food production model in cities. Through a literature review and a case study of Pink Farms in São Paulo, Brazil, the results indicate benefits such as energy and land use optimization, but also highlight the ecological, social, and landscape limitations of vertical farms.

Erin A. Hudson, Marissa Burgermaster, Sophia M. Isis, Matthew Jeans, Sarvenaz Vandyousefi, Matthew J. Landry, Rebecca A. Seguin‐Fowler, Joya Chandra, Jaimie N. Davis · Frontiers in Nutrition · United States

A secondary analysis evaluated the TX Sprouts school-based gardening, cooking, and nutrition education intervention on the home availability of vegetables, fruit juice, and sugar-sweetened beverages (SSBs). The cluster-randomized trial involved 16 schools (8 intervention, 8 control) over one academic year, serving predominantly Hispanic families with low incomes, with an analytic sample of 895 participants. The intervention positively changed the home availability of targeted foods and beverages, primarily by improving the availability of vegetables and vegetable juice, suggesting a positive influence on the home food environment.

Geisa Zanini Rorato, Eugenia Aumond Kuhn, Bruno Luan Soares Paula de Mello, Rodrigo Vitória Alves, Giulia Togni Geremia · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil (Porto Alegre)

This study mapped and characterized 82 urban and peri-urban agriculture (UPA) initiatives in Porto Alegre, Brazil. It found that educational and health-related initiatives with social and ecological objectives predominated. A significant finding was that only half of these initiatives were active at the time of the survey, with the rest being inactive or closed, indicating structural fragilities, especially in peripheral and less dense areas impacted by the COVID-19 pandemic.

Diane Smith, Katherine Selting Smith · Advances in biological sciences research/Advances in Biological Sciences Research · United States

This paper describes a SNAP CSA pilot and introduces the Farm to Families (F2F) Toolkit, developed to engage low-income consumers receiving SNAP benefits in Community Supported Agriculture (CSA). USDA rules now permit SNAP benefits for CSA shares, provided the CSA is SNAP-authorized and prepayment is within 14 days of produce receipt. This aims to expand access to fresh produce for SNAP recipients and support farmers.

Rachel Surls, Rob Bennaton, Gail Feenstra, Ramiro E. Lobo, Alda F. A. Pires, Jennifer Sowerwine, Julia Van Soelen Kim, Cheryl A. Wilen · California Agriculture · United States (California)

From 2017 to 2018, University of California Agriculture and Natural Resources (UC ANR) researchers conducted a series of 16 workshops for urban farmers in California. The evaluation found that economic issues such as profitability and land access are among the greatest barriers for urban farming in California. While networking among participants was an unexpected positive outcome, urban farmers expressed a need for more opportunities for mentoring and building partnerships.

Magda Beatriz de Almeida Matteucci · · Brazil (Trindade)

This case study characterized the diversity of agricultural products from family urban agriculture in Trindade-GO, Brazil, by applying 20 questionnaires to urban properties. Producers in Trindade adopt diverse production practices, notably cultivating lettuce, cilantro, kale, and chives. They primarily use simple, ecological techniques for fertilization and pest/disease control, including organic fertilizers, to avoid harmful and costly agrochemicals.

Angela Oulton, Susan Jagger · · North America

A discourse analysis of historical school garden texts in North America reveals that school gardens have not been welcoming or accessible to all children, despite persuasive research on the positive effects of nature-based learning. Historically, school gardens were used to serve adult agendas, including containing urban children, assimilating marginalized groups, and creating laborers, thereby reinforcing patriarchal, colonial, white supremacist, and eugenic aspirations. This study explores how these discourses culturally constructed childhoods and influenced children.

Leigh Whittinghill, Major Ballard, Anju Chaudhary, Smriti Kandel, Caitlin Mullins, Pradip Poudel · HortScience · United States

This study analyzed runoff water quality from four different nutrient management treatments (conventional fertilizer, organic fertilizer, low-compost + organic fertilizer, and high compost) in raised beds and small plastic pool container plots in the United States. Water samples, collected monthly, were analyzed for pH, conductivity, color, turbidity, nitrate-nitrogen, ammonia-nitrogen, total phosphorus, and potassium. While significant differences existed between raised beds and container plots, these did not translate to meaningful water quality differences for most variables, except for nitrate-nitrogen. The conventional fertilizer treatment showed greater or more variable nutrient leaching than other treatments.

Saria Lofton, Akilah Martin, Marjorie Kersten, Nanyombi Lubimbi, Helene Vilme, Forgive Avorgbedor, Angela Odoms‐Young · Community Health Equity Research & Policy · United States (Chicago)

This study interviewed 17 urban growers and local food advocates in predominantly Black communities in Chicago to understand barriers to accessing healthy food through urban agriculture. Key barriers identified were the lack of accessibility to traditional food retailers, the high availability of processed foods, and issues with the cultural acceptability of urban-produced foods. The research highlights significant challenges faced by these communities in accessing healthy food despite urban agriculture's potential.

Alvorí Ahlert, Tatiane Fátima Nandi · REVISTA DE EDUCACIÓN AMBIENTAL Y SOSTENIBILIDAD · Brazil (Paraná)

A qualitative and quantitative study in schools bordering Lake Itaipu in western Paraná, Brazil, verified the use of school gardens as an environmental education tool. The research applied questionnaires to public elementary, primary, and special education teachers in the region. Findings showed that most teachers favored using school gardens but found it difficult to teach students about their importance due to a lack of technical knowledge on the subject.

Sarah E. Orr · American Entomologist · United States

Community gardens are presented as a solution to food insecurity and a means to promote native bee conservation. They provide local fresh produce, affordable nutritious options, and foster education in gardening and nutrition. Additionally, community gardens support biodiversity, as roughly 35% of human food crops depend on animal pollination, with bees being primary pollinators for many crops.

Giuliano Reis, Harveen Sandhu · Em Aberto · Canada (Ottawa)

This experience report describes the adoption of place-based pedagogy in a community garden in Ottawa, Canada, to create a science learning space within a teacher education program. Based on field trips with student teachers over the last five years, it argues that non-institutionalized outdoor urban spaces can offer valuable opportunities to enrich science student teachers' experiences in their training programs.

Kendra Locklear Ordia · Interiors Design Architecture and Culture · United States (Lincoln)

This essay presents a case study of an indoor vertical farm in the historic urban core of Lincoln, Nebraska, as a form of urban agriculture. It functions as an adaptive reuse model for existing buildings, creating a spatial ecosystem for localized plant-based food production. This approach aims to enhance urban food resiliency and reconnect communities with their food.

Lila B. Karki, Prem Bhandari · Global Journal of Agricultural Research · United States (Maryland)

This 2022 project collected data from 22 small, socially disadvantaged minority urban gardeners in Maryland to enhance their efficiency. Findings showed farmers operated rationally, cultivating an average of 20 diversified specialty, ethnic, and medicinal crops on 1.2 acres. They employed integrated alley and mixed cropping systems, rainwater harvesting, expanded compost-making, maintained high cropping diversity, and introduced a tier system to mitigate production, marketing, and financial risks.