Research & reports

Evan Weissman · Journal of Agriculture Food Systems and Community Development · United States (New York City)

This essay refutes the claims by Hallsworth and Wong (2013) that the benefits of urban food gardening are exaggerated and that it cannot deliver fresher or lower-cost foods. It states that Hallsworth and Wong's assumptions are incorrect and that urban gardening plays a significant role as public space, an economic development strategy, and a community-organizing tool, contributing to household food security. For example, a 0.2-hectare urban farm project in Brooklyn, New York, "East New York Farms!", produces over USD20,000 of fresh produce annually, with over 70% of transactions made through SNAP, reaching high-need community members.

Samuel Henrique Damas Marinelo, Sandra María Fonseca da Costa, Leonardo Freire de Mello · Anais ENANPUR · Brazil (São Paulo)

In São José dos Campos, São Paulo, Brazil, residents of the Altos de Santana neighborhood maintain traditional peasant characteristics by cultivating urban gardens within a Permanent Protection Area of the Paraíba do Sul River. However, the current municipal administration plans to implement an urban park in this area, which will remove the gardens cultivated by these resident farmers. This intervention is expected to alter proposals for improving the quality of life for nearby residents concerning urban agriculture, potentially generating conflicts between stakeholders regarding land use.

Lauren M Bitter · Scholarship @ Claremont (The Claremont Colleges) · United States (California)

This autoethnographic thesis centers on the People and Their Plants garden in Upland, California, which represents the ecological changes caused by colonization in Southern California. The study critiques research and ethnography by examining the politics of knowledge, language, history, and ecology, and interrogates colonial/capitalist food systems that render Indigenous ways of knowing invisible. The People and Their Plants garden is presented as an act of resistance, creating space for alternative economic and decolonial food practices.

Maxine J. Levin · Soil Horizons · United States

This commentary highlights a growing demand for soil information for green economy initiatives and climate change adaptation over the last 25 years. Despite this, USDA's funding and technical support for soil surveys in urban and nonfarm areas have been inconsistent and, in some places, nonexistent. The author argues for the vital role of modern soil surveys in addressing current needs.

Freda G. Sampson, Thomas G. Costello, Stacey Stevens, Desiree Squire · Journal of Law and Society · United States (Detroit)

This paper examines Detroit, United States, as a city in crisis, analyzing redevelopment conflicts between gentrification and revitalization. It applies a "Litmus Test for Equity and Opportunity" to current redevelopment efforts, including the Detroit Future City Plan and projects by Michael Ilitch & Company and Dan Gilbert. The analysis suggests that despite efforts, the complexities of this post-industrial city, particularly regarding its predominantly African-American population, are only superficially addressed, indicating ongoing equity challenges.

Amanda Jessie Weaver · Digital Commons - DU (University of Denver) · United States (Colorado)

This project combined U.S. Agricultural Census data with a survey of local producers in Colorado's Front Range Urban Corridor to examine the competition between urban development and food production. The study found that urban development is increasingly encroaching on rich agricultural lands, which are also desirable for housing. Consequently, Colorado faces increasing competition for land, potentially driving local food prices up and displacing producers to peripheral areas or out of food production entirely.

Рена Упитис, Scott Hughes, Anna C. Peterson · Journal of the Canadian Association for Curriculum Studies · Canada

An 8-month qualitative study was conducted at a school garden program in one public elementary school in southeastern Ontario, Canada. Data collected from eight students through observations, semi-structured interviews, and student photographs identified five themes enhancing environmental stewardship (including connecting with nature, caretaking, and harvesting) and three themes explaining the program's long-term success (including parental involvement and community connections). The study highlighted benefits of the school garden program, as well as some difficulties associated with the program and limitations of the study.

Matthew V. Bradshaw · The William & Mary Law School Scholarship Repository (William & Mary) · United States

This Note identifies that while the urban agriculture movement is growing in popularity across the United States, legislatures have often ignored foundational laws related to the sale and distribution of goods, including inspection, labeling, labor, and compensation laws. This oversight has led to the creation of unconstitutional trade barriers in some instances. The study raises a cautionary voice to government officials regarding the potential future consequences of these regulatory gaps.

Marianne Sarkis, Tiffany Lee, Steph Fenner, Erin Barta, Kristina Kalolo · Clark Digital Commons (Clark University) · United States

Research was conducted using free-list, pile-sort, interviews, and surveys to examine the association between community gardening and food justice among Clark community gardeners in Worcester, MA. The findings supported the conclusion that Clark community gardeners do not conform to the food justice interpretation of a community garden. Although both actors share similar methods and ideologies, neither is attempting to fit the other's definitions.

Laura Knapp, Jodi L. Sangster, Shannon L. Bartelt‐Hunt · International Journal for Service Learning in Engineering Humanitarian Engineering and Social Entrepreneurship · United States (Omaha NE)

This study investigated the influence of lead hyperaccumulating plants on lead uptake by vegetables in an urban community garden in Omaha, NE, a region with significant lead contamination. Tomatoes, carrots, and amaranth were grown alongside sunflowers and mustard greens (hyperaccumulators) in lead-contaminated soil. Data showed higher lead concentrations in the hyperaccumulators and suggested that their presence might have impacted the amount of lead available to surrounding vegetation. Previous work at the garden detected lead in produce, indicating a potential exposure pathway for humans.

Kyle Kessler, Seth Umbenhauer, Alison R. Noble · Journal of the Pennsylvania Academy of Science · United States (Harrisburg)

Eight soil samples were collected from an urban land plot in Harrisburg, PA, to determine concentrations of copper, nickel, zinc, and lead and assess suitability for an urban garden. While copper, nickel, and zinc concentrations were below EPA recommended limits, lead concentrations ranged from 26 ± 1 mg/kg to 402+ mg/kg, with some samples exceeding EPA standards for heavy metals in home and vegetable gardens. This indicates potential lead contamination in the soil.

Melvin Delgado · Columbia University Press eBooks · United States

This chapter focuses on community gardening as an intervention aimed at addressing obesity, tracing its history in the United States back to the late nineteenth century as a response to social and economic crises. While community gardens can achieve various social, economic, political, educational, and health-related goals, the chapter also discusses potential pitfalls of community gardening. It emphasizes a social justice perspective for community gardens, particularly regarding community inclusion and participatory democracy.

Chris Zimmerman · Soil Horizons · United States

A narrative article profiling the work of soil scientist Samantha Langley-Turnbaugh of the University of Southern Maine, investigating lead contamination in urban soils in Portland, Maine. It traces the concern to the Great Fire of 1866, whose lead paint ash was spread across the city and used as landfill to extend the Portland peninsula, compounded by the city's historical ties to lead-producing industries. The article states that, across US cities generally, lead paint and leaded gasoline are the primary sources of soil lead contamination, and that this contamination is becoming a concern as urban gardening expands.

David DyckFehderau, Nicholas L. Holt, Geoff D.C. Ball, Noreen D. Willows · PubMed · Canada

A study in Alexander First Nation, central Alberta, Canada, used asset mapping with children to understand how community factors shape the lifestyle behaviors of First Nations children living on reserve, who are estimated to be 4.5 times more likely to be obese than Canadian children generally. Participants were a convenience sample of two high school students working at the local health centre and seven grade six children, who used maps, photographs and a town tour to identify 25 activity- or food-related places and spaces. Breakfast, lunch and snack foods (such as chocolate bars and potato crisps) were obtained at school, food and snacks at cultural gatherings, and snacks at the local store, with healthy food choices found to be limited; only two locations beyond the town site were identified for physical activity, and youth recommended building a leisure centre, selling healthier food at the local store, and developing a community garden and berry farm.

Iris T. Stewart, Elizabeth K. Purner, Patricia D. Guzm ́n · Children Youth and Environments · United States (California)

In Santa Clara County (SCC), located at the southern end of the San Francisco Bay Region and marked by high income disparities and an ethnically diverse population, this study used surveys and Geographic Information Systems (GIS) to examine links between the presence and use of school gardens and the socioeconomic and ethnic composition of surrounding neighborhoods. Statistical analysis found that school gardens in SCC are more likely to exist in economically stronger and ethnically less-diverse neighborhoods, showing that garden provision is not equitably distributed. School gardens can be maintained with relatively modest resources — a coordinator, planting area, small budget, and school-community support — yet securing these resources can itself be a significant barrier for some schools. Because natural play areas suited to environmental exploration were not typically found at SCC schools, the study suggests school gardens can play an important role in reconnecting children with the natural world.

A. Bryan Endres, Rachel Armstrong · Food Studies An Interdisciplinary Journal · United States

A legal analysis (Food Studies: An Interdisciplinary Journal, 2013) of Community Supported Agriculture (CSA) in the United States—where CSA participation more than doubled between 2004 and 2009—examines "volunteer-for-food" arrangements and unpaid internships that many CSA farms offer in exchange for labor. It finds that these arrangements do not align cleanly with federal and state employment laws governing minimum wage and workers' compensation, creating a mismatch between the community-participation model embedded in CSAs and the legal regimes that govern them. The paper identifies potential points of flexibility within existing law, explores mechanisms for farmers to avoid regulatory liability, and concludes with policy recommendations to eliminate regulations it characterizes as scale-inappropriate for CSA expansion.

Kathryn Colasanti, Michael W. Hamm, Charlotte M. Litjens · Urban Geography · United States (Detroit)

This research explores perceptions of expanding urban agriculture in Detroit, Michigan, through semi-structured interviews and focus groups. While revealing widespread support for urban agriculture as a strategy for food security and urban sustainability, the study highlights contested aspects regarding the extent to which it should occur, its purpose, and the people it would involve.

Nathan McClintock, Heather Wooten, Alethea Brown · Journal of Agriculture Food Systems and Community Development · United States (California)

This 2012 reflective case study documented the efforts of the Oakland Food Policy Council (OFPC) in Oakland, California, to develop recommendations for urban agriculture zoning. Despite popular interest in urban agriculture, zoning often acts as an obstacle to its expansion. The OFPC faced obstacles in gaining the attention of city officials and advancing its policy agenda for new zoning definitions and operating standards for urban agriculture.

Community Gardening Works! ACGA 2011 Conference, Carolin Mees, Edie Stone · Cities and the Environment · United States

This abstract discusses the rapid expansion of the community gardening movement in US urban areas. It highlights the potential for urban agriculture planning to turn against its original community-driven roots, as suggested by the title. The movement began over 30 years ago, with residents creating gardens on abandoned land, supported by programs like New York City's GreenThumb.

Nahed N. Mahrous · The Journal of Pediatrics · Canada (Hamilton)

This project investigated metal, bacteria, and corn root interactions in metal-contaminated soils from Blackfrairs Community Garden and a Hamilton home. It found that bacterial numbers were lower than in uncontaminated soils, and bioavailable metal concentrations increased over time. High concentrations of metals were detected in grains, with copper, iron, and manganese accumulating in rhizospheres, and zinc distributed throughout root tissue in Blackfrairs plants.

Julie L. Self, Amanda Wyatt, Aimee Webb Girard · The FASEB Journal · United States (Atlanta)

This research characterized community gardens (CGs) in two urban counties in Atlanta, Georgia, through semi-structured interviews with diverse garden leaders. The study identified primary barriers to creating and sustaining CGs as leadership constraints, reliable access to natural resources, and unclear regulations. It also found that CGs foster access to fresh food, knowledge, and community connections, with benefits varying by community.

Ana Carolina Paiva Rodrigues · VII CONNEPI - Congresso Norte Nordeste de Pesquisa e Inovação · Brazil (Natal)

In the Gramorezinho region of Natal-RN, Brazil, an exploratory study analyzed the socioeconomic and productive characteristics of urban and peri-urban agriculture. The methodology involved examining farmers' socioeconomic profiles, adopted production systems, and commercialization methods for key vegetable species. The study concluded that the legitimization of urban and peri-urban agriculture in Natal-RN is flawed, not only concerning municipal legislation but also regarding the guarantee of support and technical assistance for agricultural activities.

Jennifer E. Reeves · OhioLink ETD Center (Ohio Library and Information Network) · United States (Cleveland, Ohio)

This two-year study in Cleveland, Ohio, USA, investigated urban soil health via nematode food web analysis and crop productivity via tomato fruit yield in urban gardens. Market gardens showed significantly more soil organic matter, nitrogen pools, and nematode presence than community gardens in both 2011 and 2012. However, despite these differences, there was no significant difference in the total yield of tomatoes per square meter between market and community garden types in either year. Gardens with raised beds had significantly more soil moisture content and soil organic matter than those with flat beds.

W. H. Butler · Journal of Agriculture Food Systems and Community Development · United States

The reintroduction of livestock into urban areas in the United States creates tensions regarding public health and the urban-rural divide. This paper analyzes municipal codes to identify how communities regulate urban livestock through prohibitions of certain animals, zoning, site-level restrictions, and management requirements. The analysis demonstrates that while no two municipalities approach the urban livestock question identically, each seeks to place limits on raising livestock in urban areas using a combination of regulatory land use tools.

Sarah Leonard · Dissent · United States

This article explores the perilous state of food and food politics in America and a wide range of responses on the Left. It describes how the existing farm bill led to a policy disaster, the relationship between Reagan-era deregulation and the obesity epidemic, and the labor exploitation endemic to the elite dining experience. The study reveals challenges in governance within the American food system and its socioeconomic impacts.