Research & reports

Megan Shearer, Amy Dabbs, Zack Snipes, Vicky Bertagnolli, Joshua Weaver · TigerPrints (Clemson University) · United States (South Carolina)

The South Carolina Statewide School Gardening program has established over 150 school gardens, but teachers report that fire ants are overrunning the gardens and negatively impacting student experience. This FAQ addresses how to safely manage fire ants in school gardens.

John Taylor · Frontiers in Sustainable Food Systems · United States (Rhode Island)

This long-term replicated trial in Rhode Island evaluated the yield performance and soil quality impacts of four small-scale food production systems over three summer growing seasons. While total marketable food yields (2.22 to 2.96 kg m-2) were modest compared to biointensive agriculture (4.64 kg m-2), individual crop yields often exceeded regional and national averages without soil quality loss. The study addresses a lack of experimental research on urban agriculture and provides a framework for normative research, offering more reliable yield estimates for modeling urban production potential.

Catherine Dobbins, Casandra Cox, Leslie D. Edgar, D. L. Graham, Amanda Philyaw Perez · The Journal of Agricultural Education and Extension · United States

This study aimed to define urban agriculture for Arkansas, a rural state, by conducting 16 qualitative interviews using snowball sampling. It found that the Arkansas-specific definition evolved to small-scale, diversified, and sustainable farming within city limits, engaging with the market or community, and fewer than 10 acres. Participants also expressed hesitation to be defined solely as 'urban farmer'.

Jennifer Jettner, Mary Secret · International Journal of Social Welfare · United States

This study examined the relationship between race and racial diversity on social capital in community gardens located in food deserts in the southeastern USA. Cross-level regression models were performed on a sample of 52 gardeners from 10 community gardens, analyzing their “sense of community” and the “number of resources” obtainable from fellow gardeners. Results indicated that community gardens are excellent vehicles for promoting one’s sense of community regardless of race or garden’s racial composition, but they were less likely to increase the number of resources. Accessing a greater number of resources took longer and more effort, and increased perceptions of racial diversity had a negative relationship with the number of resources.

Stacy M. Philpott, Azucena Lucatero, Peter Bichier, Monika Egerer, Shalene Jha, Brenda B. Lin, Heidi Liere · Ecological Applications · United States (California)

This study investigated natural-enemy-herbivore co-occurrence networks associated with Brassica oleracea in 24 urban vegetable gardens in the California, USA central coast region. Increased floral richness and B. oleracea abundance were associated with increased parasitoid and non-aphid herbivore abundance, and increased network vulnerability. Increased vegetation complexity suppressed parasitoid abundance but boosted network vulnerability. High agricultural land-use cover around urban gardens was associated with lower predator, parasitoid, and non-aphid herbivore abundance, lower natural-enemy:herbivore ratios, lower interaction richness, and higher trophic complementarity.

Teresa Irene Gonzales · · United States (Chicago)

This 30-month ethnographic case study in La Villita, Chicago, based on 14 interviews, examines how Chicana activists challenge environmental racism and transform blighted spaces. The study highlights their use of "Chicana environmentalism," an asset-based framework, to cultivate local knowledge and create community assets, including a community garden and the transformation of a superfund site into a public park. These efforts have increased resident land ownership and civic activity, demonstrating the organizations' ability to address city-level racist development policies.

Fernando Marcelo Cardozo, Ramiro Bastos · Cadernos de Agroecologia · Brazil

An experiment conducted in Aracaju, Sergipe, Brazil, between 2016 and 2019, involved over 40 events focused on constructing spiral herb beds in various city neighborhoods. These events, structured as permacultural workshops, aimed to transmit knowledge and stimulate knowledge exchange among participants. Lectures covered topics such as agroecology, urban agriculture, ancestral peoples, and community gardens, using technical, popular, and artistic languages to engage diverse audiences.

Ananias Lima dos Santos, Ruandra Kaienne da Silva Laranjeira, Rodrigo Pereira, Maria Raquel de Carvalho Cota, Lionete Viana da Silva, Everton Ramos de Souza · Brazilian Journal of Development · Brazil

This study aimed to demonstrate that non-formal school spaces can serve as an alternative teaching-learning method for environmental education. The project, conducted with 5th-grade students at Escola Estadual Thomé de Medeiros Raposo, showed significant results from proposed activities and comparative questionnaire data. Students gained practical experience in conscious citizenship and adopted new behaviors through creating a school garden using recycled materials.

Lauren Chenarides, Carola Grebitus, Jayson L. Lusk, Iryna Printezis · Agribusiness · United States

This study examined household-level participation in urban agriculture (community and home growing) before (2017) and during (2020 lockdown) the COVID-19 pandemic in Phoenix, AZ, and Detroit, MI, using two online surveys and bivariate probit models. It found that considerably fewer individuals participated in community gardens compared to home gardening, and overall participation was lower in 2020 than in 2017. The continuity of individuals' participation in growing food at community gardens and home is fragile, and many urban households' food-growing practices may not yet be mainstream, suggesting other barriers inhibit participation.

Dana Guglielmo, Sicha Chantaprasopsuk, Christi Kay, Eric T. Hyde, Chris Stewart, Julie A. Gazmararian · Journal of School Health · United States (Georgia)

This cross-sectional online survey assessed nutrition policies, practices, and environments in 113 Georgia SNAP-Ed elementary schools from 2015-2017. While most schools had wellness policies and provided nutrition education, fewer had policies limiting sugar-sweetened foods in classrooms or established school gardens. Minimal significant differences were found across school-level demographics.

Karoline Oliveira da Silva, Renata Rodrigues dos Santos Oliveira · Revista Macambira · Brazil

This article reports experiences and reflections from an intervention research conducted in the Bastião Community in Retirolândia, Bahia, Brazil, with 12 women members of the Bastianense association. The research aimed to investigate the relationship between the community and medicinal plants, and to strengthen bonds among participants. The outcome was the implementation of a community garden of medicinal plants and the production of a socio-educational manual for its implementation.

GONZALO MARÍN OVIEDO, OLIVEIRA, ALESSANDRO SILVA DE · Zenodo (CERN European Organization for Nuclear Research) · Brazil (Anápolis)

The Federal Institute of Goiás, Anápolis campus, aims to contribute to overcoming socio-environmental problems affecting vulnerable communities in the region through sustainable agriculture in a community garden. This initiative proposes developing critical environmental education, discussing theoretical and practical aspects of the critical approach and its relationship with praxis. Historical-Dialectical Materialism guides the theoretical-methodological aspects, and Action Research is used for practical aspects.

Lauren Balotin, Samantha Distler, Antoinette L. Williams, Samuel J. W. Peters, Candis M. Hunter, Chris Theal, Gil Frank, Taranji Alvarado, Rosario Hernandez, Arthur Hines, Eri Saikawa · International Journal of Environmental Research and Public Health · United States (Atlanta)

This study investigated Atlanta residents' knowledge regarding heavy metal and metalloid (HMM) exposures and remediation in urban agriculture, following the detection of industrial slag and hazardous soil contamination in West Atlanta in 2018. Through surveys and follow-up interviews, it was found that participants were concerned about the potential health effects of soil contaminants but unconcerned with produce in their gardens. Gardeners' knowledge of HMM exposure sources and remediation methods was low and varied based on racial group.

Michelle Glowa, Antonio Roman-Alcalá · New York University Press eBooks · United States (California)

This chapter examines the San Francisco Urban Agriculture Alliance, analyzing its composition, genesis, and how it has confronted the tensions and limitations of neoliberal urbanization. Based on personal experiences and research, it proposes that justice-driven urban agriculture movements are influenced by political-economic changes and can be absorbed into existing neoliberal and pro-development trajectories. This indicates a critical finding regarding equity and the challenges urban agriculture faces in resisting gentrification.

Glauco Régis Florisbelo, Angelina Moreira Melo, Alair Ferreira de Freitas, Pinheiro, Daniel Calbino · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil

This study analyzed how the implementation of a Community Supported Agriculture (CSA) in an urban community garden in Sete Lagoas (MG), Brazil, contributed to food and nutritional security for consumers and increased the income of family farmers. Qualitative data was collected through semi-structured interviews with farmers and questionnaires administered to consumers. The results demonstrated that the CSA strengthened social relations between farmers and consumers, added elements of food and nutritional security, and improved the income of farming families.

Christine Lux, Brianna Routh, Lacy Stephens · Journal of Human Sciences and Extension · United States

This exploratory study surveyed 21 parents from a campus-based preschool in the northwest United States during the 2017-2018 school year to understand the impact of the "Harvest of the Month" program on children's nutrition behavior at home. Findings indicated that a variety of program foods were served and consumed at home, but parents prioritized knowing food origins over serving local foods. Parents' knowledge of farm to ECE, reported farmer's market purchases, and CSA participation were limited, suggesting a need for targeted parent education.

Tiare Saracino, Lynn Barber, Esen Momol, Tina McIntyre, Tom Wichman, Gail Hansen, Jen Marvin, Terra Freeman, Joseph Sewards, Wendy Wilber, Jacqlyn Rivas · DOAJ (DOAJ: Directory of Open Access Journals) · United States (Florida)

The objective of this publication is to address the important concern of maintaining edible landscapes in a way that protects the environment for Florida's water quality. It introduces the framework of the Florida-Friendly Landscaping™ principles and applies these principles to guide decisions about Best Management Practices (BMPs) for the care of edible landscapes.

Lucy Diekmann, Marcia Ostrom · · United States

This chapter reviews participatory extension approaches and demonstrates their application to urban agriculture through five US Extension case studies. The selection of these case studies was informed by a 2015 nationwide survey of Extension personnel working on local, community, and regional food systems. These examples illustrate how urban agroecological knowledge and networks are being developed and applied, and suggest directions for future Extension work.

Omanjana Goswami, Ashaki A. Rouff · Soil Systems · United States (Newark)

Soils from seven community farms in Newark, New Jersey, USA, were analyzed for lead (Pb) concentration and speciation. Single-step extractable Pb concentration ranged from 22 to 830 mg kg−1, with 21% of samples exceeding the NJDEP limit of 400 mg kg−1 for residential soils. Lowest Pb concentrations were detected in raised beds, while uncultivated native soil and parking lot samples had the highest values. Although most Pb is associated with reducible and oxidizable soil fractions, indicating a lower risk of mobility and bioavailability, Pb exposure through ingestion and inhalation pathways remains a concern when directly handling the soil.

Marisa Menezes Leal, Bianca Motta Dolianitis, Jaqueline Rambo Anschau, Janessa Aline Zappe, Rosana Santos de Moraes, Marcelito Cavalheiro, Jean Carlos Robattini, Bruno Luan da Rosa Machado, Kelen Dal-Souto Frescura, Viviane Da-Souto Frescura · Ciência e Natura · Brazil (Rio Grande do Sul)

This study aimed to implement school gardens using recyclable materials in several schools in Rio Grande do Sul, Brazil. Pet bottles, tires, pallets, and shingles were used to prepare beds and support plants. The activities were carried out by members of the "Living Garden Extension Project at School" in collaboration with students and teachers, and the garden space was utilized as an environment for teaching various subjects.

Elsie Rockwell · History of Education · United States

This article explores the history of school gardens in early twentieth-century US educational projects, finding that gardening activities were primarily for urban children lacking farming experience. It compares gardening's role in northern experimental schools with proposals for rural and segregated southern schools. The analysis identifies various logics, including arguments for promoting or dismissing school gardening and rationales for educating or retaining specific labor forces, highlighting a paradox between "return to nature" and "love of labor" in the discourse.

Cristiana Guimarães Alves, Bráulio Silva Chaves, Lucas Araújo Dutra Rodrigues · Cadernos de Agroecologia · Brazil

In August 2017, the CEFET-MG Project "Cabana do Pai Tomas. to the Aglomerado da Serra: links between science, technology and education" in Brazil conducted activities to connect science, technology, and education. As part of this project, a ten-module Agroecology Course was offered, providing training to residents of Casa da Cabana, CEFET-MG students, and the general public on knowledge related to urban agriculture, food security, agroecology, the creation and maintenance of urban gardens, and social technologies.

M. Petrie, S. Basu, E. Sayer, R. Bellin, J. O apos Neill, S.A. Berkowitz · UNC Libraries · United States

This study estimated the population-level effectiveness and cost-effectiveness of a subsidized community-supported agriculture (CSA) intervention in the United States. A microsimulation model developed in 2019 utilized national demographic, biomedical, and dietary data (NHANES, 2013-2016) and a randomized trial (Massachusetts, 2017-2018). Two interventions were modeled: an unconditional cash transfer ($300/year) and a subsidized CSA ($300/year subsidy), both of which were shown to reduce discounted disability-adjusted life years (DALYs) for cardiovascular disease and diabetes complications. Both interventions had negative incremental cost-effectiveness ratios, implying cost savings to society.

Miho Lowan‐Trudeau, Noel Keough, Joshua Wong, Sara Haidey · Canadian Geographies / Géographies canadiennes · Canada (Calgary)

This study, examining community gardens in Calgary, aimed to determine the socio-economic demographics of neighborhoods supporting community gardens and their proximity to active transportation and public transit. GIS visualization and quantitative analyses were used to investigate relationships between demographic variables and transportation accessibility. Findings showed that community garden neighborhoods are located in areas with significantly fewer visible minorities, higher levels of educational attainment, and more attached dwellings like apartments and townhomes. This study suggests potential inequities in the proliferation of public community gardens based on socio-economic factors beyond economic capital.

Layssa Kmiecik Layssa Kmiecik, André de Souza Lucca · Revista Gestão & Sustentabilidade Ambiental · Brazil (Curitiba)

This qualitative study, focused on the Cajuru Community Garden in Curitiba, Brazil, aimed to propose recommendations for projects promoting native Unconventional Food Plants (PANCs). Using bibliographic, documentary, field research, and surveys, it generated recommendations for communicating PANCs' qualities and for their sustainable cultivation and responsible consumption in urban community gardens.