Research & reports

S. Maré, Sarel S. Cilliers · Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie · South Africa (Ngaka Modiri Molema district municipality)

This study surveyed clinic gardens in the Ngaka Modiri Molema district municipality, North-West Province, focusing on the relationship between the environment, socio-economics, and health aspects of rural Tswana communities. The findings offered insights into species diversity, garden purposes, management reasons, and resources for improvement and potential expansion to community gardens.

Katherine Luke · D-Scholarship@Pitt (University of Pittsburgh) · United States (Pittsburgh)

This study used a door-to-door survey in six Pittsburgh, Pennsylvania neighborhoods to measure the impact of community gardens on residents' perceptions of food access. It found that many gardeners do not consider gardening to improve their personal food security, and despite geographic proximity and expressed interest, community garden participation rates were low. Social and emotional barriers, including lack of gardening knowledge and racial prejudice, appeared to prevent residents from becoming active participants.

Edward Duś · Environmental & Socio-economic Studies · Poland

This analysis examines the recreational use of allotment gardens in the industrial Katowice conurbation, Silesia, southern Poland, considering their historical development. Allotment gardens serve as a primary base for recreation for their owners, offering both physical activities and passive leisure. Recreational use is seasonal and varies daily, influenced by weather and available free time, with socio-economic changes impacting utilization methods and types of recreational use.

Brînduşa Bîrhală, Judith Möllers, Bîrhală, Brînduşa, Möllers, Judith · AgEcon Search (University of Minnesota, USA) · Romania

This study investigated Community Supported Agriculture (CSA) in Romania, focusing on costs and benefits for both farmers and consumers in three pioneering CSA groups offering organic vegetables to contracted consumers in the western part of the country. It found that consumers are typically urban dwellers with higher education and income, prioritizing organic-quality fresh products over solidarity, which is a value aspired by the initiating NGO. Farmers' main motivation for CSA involvement is the need for a stable market with fair prices, indicating that both parties use CSA to compensate for market failures.

Moira Beery, Rachel Adatia, Orsola Segantin, Chantal-Fleur Skaer · Health Education · South Africa (Johannesburg)

This paper examines the role of organic permaculture food gardens established at two schools in Johannesburg, South Africa, over one year, in addressing food insecurity and environmental sustainability. A nutrition study with 68 children found that these gardens can contribute to children's physical, mental, and emotional health, serving as a resource for teachers and learners. The study notes that practical and cultural challenges must be addressed for sustainability, and its findings, based on a one-year assessment at only two sites, may not be universally applicable.

장진, 오충현 · · South Korea

This study examined the application of urban agriculture's therapeutic properties as a measure against school violence in South Korea. A 2014 survey of 77 middle school students in Gangdong-gu, Seoul, found that 68.8% had plant cultivation experience. Reasons for participating in urban agriculture activities included learning about the value of life and plant cultivation, finding peace and achievement, and socializing with friends. The most needed experiential activities were cognitive (41.6%), emotional (40.3%), and behavioral (36.4%).

Lana Slavuj Borčić, Cvitanović Marin, Aleksandar Lukić · · Croatia (Zagreb)

Community gardens have long existed in Zagreb, Croatia, where residents have transformed underused public urban areas into gardens. While these activities largely occurred outside formal government frameworks, the "City Gardens" policy was adopted in 2012 to allocate urban public parcels to interested citizens. This policy increased participation in community gardening, and previous research indicates that community gardens offer multiple benefits and positive impacts on individuals, local communities, and urban spaces.

Suarau Odutola Oshunsanya, Tolafe Olayinka Adeniran · Agricultura tropica et subtropica · Nigeria (Ibadan)

A field experiment in Ibadan investigated the quality of irrigation water used for dry season vegetable cultivation along Ona-stream. Water samples from five isolated ponds and one locally dug well were analyzed for heavy metal status. Results showed high concentrations of Pb, Cr, and Co in soil from five farms (A-E) near the stream, and isolated pond water also contained Cr, Co, and Pb exceeding safe consumption thresholds. All vegetables irrigated with untreated isolated ponds contained Cd, Pb, and Ni concentrations above maximum permissible standards, posing potential risks to human health.

David R. Koenig · BIOS · United States (Sacramento)

This research project, conducted at the University of California, Davis, aims to understand how elevated soil lead levels may affect urban gardening activities in Sacramento, CA. The study investigates the distribution of soil lead levels in the city and how knowledge of this information impacts the local community. Elevated soil lead levels are identified as a potential barrier to urban gardening.

Monique Centrone Stefani, Debbie Humphries, Rebecca Kline · The FASEB Journal · United States

This study implemented and evaluated a pilot intervention addressing chronic disease risk factors in a low-income Hispanic population in the United States. The New Haven Farms Fresh Produce Prescription program provided fresh produce, nutrition education, gardening education, and cooking demonstrations weekly over sixteen weeks of the agriculture season. Participants, recruited through a community health center, came weekly to a central urban agriculture site and completed baseline and follow-up assessments of dietary diversity, chronic disease risk, food security, and physical activity. Fifty-one people completed the baseline survey and 40 completed the follow-up survey; preliminary analysis showed approximately 30% had some food insecurity at baseline. The study reports on the development of this complex agriculture-based intervention as a pilot.

Emmanuel O. Adu · Mediterranean Journal of Social Sciences · South Africa

A study of urban agriculture's relationship to students' life satisfaction in Eastern Cape, South Africa, identifies nutrition, self-employment, food security and poverty eradication as components of that satisfaction, alongside economic benefits such as income distribution and small-scale business. It recommends that South Africa's government make agriculture education compulsory for grades 10 and 11, with practical components making up at least half of overall marks, while noting challenges including limited available space, damage to crops from stray animals, pests and diseases, and unreliable access to inputs such as soil, manure, seedlings and water.

Emily Corrigan-Kavanagh · · Canada

A pilot study is planned at St. Francis School in Harbour Grace, Newfoundland and Labrador, Canada — one of the few school gardens in the province and a greenhouse program described as a unique example of innovation in health, environment, agriculture, and education. Key informant interviews with parents, teachers, and community leaders involved in or interested in the project are planned, aiming to investigate the program's start and evolution, analyze facilitators and deterrents to keeping it running, identify its benefits, and identify key aspects for maintaining sustainability.

Otu W. Ibok · Asian Journal of Agricultural Extension Economics & Sociology · Nigeria

A study of food security determinants among 217 urban food-crop-farming households in three urban areas of Cross River State, Nigeria — Calabar, Ikom and Ugep — selected through two-stage sampling. Cross-sectional data from structured questionnaires and interviews were analyzed using a headcount index, food insecurity gap index, food surplus gap index and logistic regression. Results showed 52.5% of households were food secure and 47.5% food insecure; food-secure households exceeded the food security line by 44%, while 53% of food-insecure households fell below the poverty line. Logistic regression identified years of formal education, farming experience, farmer age, farming as the main occupation, household size, farm income and crop output as the main determinants of food security status.

Roberta Fontanive Miyahira, Lilia Zagoa, Marta Citelli dos Reisa, Josely Correa Kourya · Vigilância Sanitária em Debate · Brazil

A practice report on nutrition education at a municipal school in Rio de Janeiro, Brazil, delivered through establishing a school garden and running workshops to train food handlers among students and staff. The method spread technical and scientific knowledge while also prompting reflection on food's nutritional, sensory, functional and sanitary dimensions. Based on participant reports and the researchers' empirical analysis, the workshops were judged a creative and efficient approach with low cost and low implementation complexity.

Karen Hobday, Jacqueline Ramke, Rènée du Toit, Sara Pereira · Health Education Journal · Timor-Leste

An intervention under the Healthy Eyes in Schools Project, delivered across four primary schools in Aileu District, Timor-Leste, was evaluated using a descriptive mixed-methods design combining questionnaires and interviews. Local teachers received training and resources to deliver nine lessons on eye health; in two schools this was paired with the creation of school gardens and improvements to water and sanitation. Students in classes 5 and 6 took part: 384 students aged 10-17 (median 12) completed the baseline survey and 237 completed a follow-up. The intervention was associated with improved eye health knowledge and some attitudes and practices, but attitudes about the capabilities of blind children and adults did not change. Teachers' attitudes and support from principals and an international NGO appeared key to successful implementation, while limited coverage of eye health in the existing curriculum, limited parent participation, and limited access to healthy food may have constrained the intervention's effectiveness.

Andrew Hanks, Brian Wansink, David R. Just · The FASEB Journal · United States (New York City)

In a small northwestern New York community, a pilot study tested whether adding leafy greens harvested from a student-maintained school garden to the lunch salad bar affected salad selection among 370 high school students. On days when pasta was served as the main dish, the percentage of students taking salad rose from 2% to 10% (p<0.001), a 400% increase, when the salad contained garden-grown leafy greens compared with standard salad days.

Liang Da · Shipin yanjiu yu kaifa · Global

A conceptual paper (Shipin yanjiu yu kaifa, 2014) analyzes the function and mechanism of Community Supported Agriculture (CSA) from a food-safety perspective, framing CSA as a response to environmental problems associated with intensive traditional agriculture. It discusses CSA's development prospects and proposes alternative approaches for green, ecological, leisure-oriented agriculture, without presenting empirical data or numeric findings.

Alexander Trutko · VTechWorks (Virginia Tech) · United States

A case study of the Common Good City Farm's Green Tomorrows program, a community-based urban agriculture and nutrition education program for residents of Washington, D.C., which aims to increase participants' food security, their ability to grow crops in urban locations, and their knowledge of nutrition, food preparation, and food budgeting. The study sought to understand how effectively the program achieved its intended goals and outcomes through semi-structured interviews with program staff and recent regular participants, in order to (1) identify similarities and differences between staff- and participant-stated program goals, (2) determine key program impacts, and (3) generate programmatic recommendations. Participants reported that the program's food distribution increased their consumption of produce, contributing to improved food security, along with greater knowledge of agricultural methods and healthy eating and an improved ability to prepare and shop for healthy food after completing the program. Overall, the Green Tomorrows program's outcomes aligned with staff and participant expectations and were reported to positively influence participants' food security, nutrition knowledge, food preparation, and food-budgeting skills.

Kim Jin-Won, Yong-Man Yu, Na Won-Seok, Baljii Enkhjargar, Choi In-Wook, Youn Young-Nam, Young-Ha Lee Young-Ha · Horticultural Science and Technology · South Korea

In Seoul, South Korea, 260 samples of Chinese cabbage and lettuce were collected from four urban community gardens and six roof gardens between September and October 2012 and assessed quantitatively and qualitatively for microbiological and parasitological contamination. Mean total aerobic bacteria counts were 6.1±0.8 log CFU/g (range 5.4±0.6-7.1±0.8) and mean coliform counts were 4.0±0.7 log CFU/g (range 2.3±0.6-6.1±0.9), with coliforms detected in 59.6% of the 260 samples. There was no significant difference in contamination levels between cabbage and lettuce, but produce from community gardens showed higher levels than that from roof gardens (p>0.05). E. coli was isolated from 3.1% of vegetables at a level of 1.5±0.2 log CFU/g. Among foodborne pathogens, Staphylococcus aureus was detected in 1.5% of samples, while Salmonella spp., Listeria monocytogenes and E. coli O157:H7 were not detected in any sample. Unidentified parasite eggs were also found in two cabbage samples (0.8% of the total). The results indicate bacteriological contamination is present in produce grown through urban farming in Seoul, and the study calls for efforts to reduce biological contamination during cultivation.

Barnidge E. K., Hipp P. R., Estlund A., Duggan K., Barnhart K. J., Brownson R. C. · International Journal of Behavioral Nutrition and Physical Activity 10:128 · United States

Survey study in rural Missouri. Community garden participants were significantly more likely than non-participants to eat fruit 2+ times and vegetables 3+ times daily after adjustment (OR=2.76).

Matejowsky T. · Locale: The Australasian-Pacific Journal of Regional Food Studies · Philippines (Urdaneta City, Pangasinan)

This ethnographic case study examines Urdaneta City's backyard and community gardening program launched in 2009 to address food insecurity and household self-sufficiency in a provincial Philippine city. It analyzes the interplay between municipal government objectives and citizens' subsistence and economic needs.

Lauren Bugdalski, Lawrence D. Lemke, Shawn P. McElmurry · Risk Analysis · United States (Detroit, MI)

This study examined small-scale spatial variability of soil lead within a 15 × 30 m urban community garden plot on two adjacent residential lots in Detroit, Michigan, analyzing 80 samples for total, fine-fraction, and bioaccessible lead. Concentrations varied at 1–10 m scales with a hot spot exceeding 400 ppm, and Monte Carlo simulations showed that increasing sample numbers reduces the chance of missing hot spots while compositing reduces overestimation of the mean. The authors suggest US EPA sampling objectives and guidelines should be reconsidered for reclaimed city lots where soil lead is nonuniform.

Rebecca Kessler · Environmental Health Perspectives · Global

As interest in urban agriculture grows, researchers are working to manage the risks of contaminated urban soils. The focus is on maximizing the benefits of urban gardening while minimizing the potential hazards associated with soil contamination.

Christine Moon, Rachel Spinelli · DigitalCommons - CalPoly (California State Polytechnic University) · United States (California)

This project proposes to examine the relationship between school garden initiatives and the socioeconomic status of the community in California, United States. It plans to compare five elementary schools, using Pacheco Elementary School as a model, to explore how socioeconomic factors affect the success of garden projects and their community contributions. The study aims to address these research questions through comparative analysis.

Yuan Ping-ping · Anhui nongye kexue · China

This literature review elaborated on the promotion of harmonious interpersonal interactions in allotment community gardens from three perspectives: improving interactions among family members, different families participating in the garden, and members of a wider community outside the garden. With China's rapid industrialization and urbanization, allotment community gardens, as a form of agriculture and recreation, are stated to help solve problems in interpersonal interactions, curb social estrangement, and promote a harmonious society by positively affecting interpersonal interactions.