Research & reports

Valentina Cattivelli · Journal of urban regeneration and renewal · Italy (Lombardy)

This paper describes the profile of foreign urban gardeners in Lombardy, Italy, based on questionnaire responses from municipalities. Foreign gardeners predominantly originate from North Africa and Eastern Europe, are mostly over 40 years old, married, and have children. While many Lombard municipalities have urban gardening projects, there is no regional database of cultivated plots or specific information on gardens cultivated by foreign-born residents.

Amy Russell, Ziqi Li, Mingshu Wang · International Journal of Applied Earth Observation and Geoinformation · United Kingdom (Glasgow)

This study investigated the distribution of urban agriculture in Glasgow, Scotland, UK, finding that existing projects are mostly centrally located, covering 36% of the total population (approximately 635,000) within a 10-minute walk. A positive correlation was found between walking travel time to the nearest urban agriculture project and food desert status, indicating access disparity. Using the Maximal Covering Location Problem model, the research identified that a minimum of 15 new urban agriculture projects on vacant and derelict land could increase population coverage to 49% and equalize access disparity to a statistically non-significant level.

G. C. Moore Smith, Gilda Berruti · · Italy

This chapter explores Italian community gardens and the multiple policy frameworks that govern these activities, framing urban and peri-urban horticulture as part of a long tradition carrying social, environmental, and health benefits. It states that the drive for locally produced food is part of a recurring theme in public discussion; while few advocate national self-sufficiency, the widespread presence of locally based civic horticulture is said to raise awareness of food-production factors and to have a beneficial impact on patterns of food consumption and procurement. The chapter presents results of an investigation carried out in various parts of the country — Turin, Venice, Bologna, Siena, Rome, and Palermo — and also explores the special case of urban horticulture in greater Naples.

Veronica Sebald, Julia M. Schmack, Monika Egerer · Renewable Agriculture and Food Systems · Germany

This study surveyed the occurrence of poisonous plant species in 30 urban community gardens across two German cities, Berlin and Munich, and examined concerns around poisonous and highly poisonous plants in urban garden settings. It found that plants producing substances toxic to humans occur in these gardens while also potentially holding ecosystem-functioning and biodiversity-conservation value, creating a trade-off with the ecosystem service of human health promotion, and concludes that poisonous plants should be carefully monitored and managed—depending on garden participants and the goals of the garden organization—to mitigate health risks while still supporting biodiversity conservation.

Wood C. J., Barton J. L., Wicks C. L. · International Journal of Environmental Research and Public Health, 19(20):13166 · United Kingdom

A longitudinal study tracking 53 people with mental illness referred to the therapeutic community garden 'Growing Together' in Essex, UK, showing that participation improved wellbeing, reduced loneliness and raised life satisfaction. Benefits held even across the COVID-19 pandemic, supporting the value of green social prescribing.

Tripodi P., D'Alessandro A., Francese G. · Frontiers in Plant Science 13:1031776 · Italy

Integrated genomic and biochemical analysis of heirloom tomatoes linking fruit shape and size to sugars, organic acids, and aroma compounds. Demonstrates heirlooms as germplasm resources for high food quality and sustainable agriculture.

Wood C.J., Polley M., Barton J.L., Wicks C.L. · International Journal of Environmental Research and Public Health · United Kingdom

Interviews with 13 stakeholders (social prescribing link workers and garden staff) and focus groups with 20 garden members examined how therapeutic community gardening supports mental health through nature engagement, hope, and social support, and identified barriers to referral and attendance.

Moore E.J., Thew M. · British Journal of Occupational Therapy · United Kingdom

Semi-structured online interviews with six care leavers aged 18-24 explored their experiences of a socially prescribed community allotment gardening group, yielding themes of social belonging, a safe space, achievement, and the facilitatory aspects of nature.

· ChemPlusChem · France (Nice)

Mapping airborne polycyclic aromatic hydrocarbons in urban Nice, the study documented PAH uptake by crops grown in the city, showing urban air pollution can contaminate produce.

Pénélope Duval, Claire Valiente Moro, Christina Aschan-Leygonie · Parasites & Vectors · France

A KAP survey conducted in community gardens in France showed that attitudes, more than knowledge, influence community gardeners' protective practices against the Asian tiger mosquito. All participating gardeners were concerned about the Asian tiger mosquito and motivated to incorporate control methods, but perceived mosquitoes as nuisances rather than disease vector species. This survey reveals a lack of knowledge and awareness of good practices for efficient control of the Asian tiger mosquito in green urban areas.

Rhys Furlong, Caroline Harvey, Fiona Holland, Jenny Hallam · NECTAR - Northampton Electronic Collection of Thesis and Research (University of Northampton) · United Kingdom (Nottingham)

Seven semi-structured interviews were conducted with allotment gardeners from low-income areas of Nottingham, UK, 12 months after they began their tenancy at St Ann's allotments. This interview data was used for an interpretative phenomenological analysis published in "Cities and Health." Due to ethical and commercial issues, the data underpinning this publication is not openly available.

Riccardο Petrini, Lisa Ghezzi, Simone Arrighi, Lisa Genovesi, Chiara Frassi, Luca Pandolfi · International Journal of Environmental Research and Public Health · Italy (Tuscany)

Trace elements were measured in soil and groundwater in the Fornaci di Barga urban area, Tuscany, Italy. Results indicate that Cu, Zn, and Cd are the main contaminants in surface soil, likely originating from airborne particulate matter deposition from metallurgical activity. Risk assessment considering soil ingestion and dermal contact exposure routes revealed that the cadmium Hazard Quotient approaches unity for children, and the cadmium risk-based concentration is only slightly lower than the maximum concentration measured in soil.

Grete Swensen, Vebjørn Egner Stafseng, Véronique Karine Simon · International Journal of Heritage Studies · France (Bordeaux)

This comparative case study examines two regeneration projects, the Darwin Ecosystem Project in Bordeaux, France, and Dr. Dedichen’s Greenhouse in Oslo, Norway, to understand how heritage combined with urban gardening can enhance areas requiring regeneration. The study notes that conflicting economic, political, and cultural views are likely to affect the heritage discourse in marginalized urban areas. It describes how old buildings and historical fragments can be integrated into urban planning initiatives, with residents, artists, and citizen groups cooperating with planning authorities to transform neighborhoods.

Claudia Antón Biezma · DOAJ (DOAJ: Directory of Open Access Journals) · Spain (Madrid)

This description is about the Adelfas urban garden in Madrid, photographed on January 24, 2021, which won the Spanish Association of Geography's Photography Contest (Student Category 2021). The garden is a large, open space next to the author's home, receiving good sunlight, watered twice weekly by neighbors, and open to everyone. It provides city children with contact with a rural environment, fosters personal relationships, utilizes unused urban spaces, and acts as a small green lung against pollution.

Jonathan Stubberfield, Mads Troldborg, E. Louise Ander, N.M.J. Crout, Scott D. Young, Rupert Hough · Agronomy · United Kingdom

This study investigated the influence of gardening routines on health benefits and risks among 120 urban gardeners in the UK. Participants showed a correlation between autumn/winter gardening activity and fruit/vegetable consumption, with higher physical activity levels and lower BMI than average. However, while gardening offers health benefits, the health risks from gardening on soils mildly contaminated with cadmium and lead may outweigh these benefits, requiring formal consideration within a risk management framework.

Arnaud Sapin, Philippe Bodénan, Thierry Lebeau, Ghozlane Fleury‐Bahi · Journal of Community & Applied Social Psychology · France

A qualitative study in Nantes, France, interviewed 28 allotment garden users to examine psychosocial impacts. While highlighting benefits like psychological well-being, physical health, self-development, and social bonding, the study found these were balanced by various conflicts reported by participants. Lexicometric analysis confirmed that positive and negative social aspects are significantly associated and must be considered jointly.

Sara R. Healy, Eric R. Morgan, Joaquín M. Prada, Martha Betson · Food and Waterborne Parasitology · United Kingdom

This proof-of-concept study investigated the presence of Toxocara spp. eggs on 82 'ready-to-eat' vegetable samples (lettuce, spinach, spring onion, celery) from 16 community gardens in southern England. Two lettuce samples tested positive for Toxocara spp. eggs, showing an overall prevalence of 2.4% for vegetable samples and 6.5% specifically for lettuce. This study is the first to demonstrate Toxocara spp. eggs on vegetables grown in community gardens in the UK and Europe, highlighting biosecurity and zoonotic risks.

Yangzixian Yang · Journal of Architectural Research and Development · United Kingdom (Birmingham)

This paper aims to assess Birmingham's suitability for flat rooftop farming in the United Kingdom. It explores two examples of rooftop farms, Brooklyn Grange in New York and Thammasat University, the largest rooftop farm in Asia, and proposes converting the tops of buildings at Birmingham City University into a flat roof farm.

Kimo van Dijk, Lotte Veenemans, Ciska Nienhuis · · Netherlands (Amsterdam)

This report explains the importance of improving sanitation circularity, its link to circular urban food production, and the opportunities and barriers for its realization in Amsterdam. It discusses aspects related to sustainability, environment, quality, agronomy, legislation, health and safety, technology, economics, and awareness. The report provides recommendations for Amsterdam and other cities to stimulate the transition to circular sanitation and nutrient recovery/reuse in urban agriculture, including clarifying legislation and addressing barriers.

Anastasia Nikologianni, Alessandro Betta, Mattia Andreola, Angelica Pianegonda, Gian Antonio Battistel, Anna Ternell, Alessandro Gretter · Athens Journal of Sciences · Europe

This paper explores urban farming models and their role in climate change adaptation within urban environments, drawing on the SATURN project's collaboration across Gothenburg (Sweden), Trento (Italy), and Birmingham (UK). It presents Gothenburg's entrepreneurial model, where municipal management leases allotments to farmers to scale businesses and provide sustainable food. Trento combines bottom-up and institutional processes to foster short local supply chains, potentially benefiting from a land lease scheme. Birmingham's model views urban farming primarily as community support for mental health and awareness, rather than an entrepreneurial activity. The research demonstrates how abandoned and underutilized land can be regenerated through these diverse European urban agriculture models.

Catalina Cruz-Piedrahita, Charlotte Roscoe, Caroline Howe, Daniela Fecht, Audrey de Nazelle · Frontiers in Public Health · United Kingdom

A cross-sectional analysis of 204,478 UK Biobank participants examined the association of fruit and vegetable intake, physical activity, and greenspace exposure with health and wellbeing markers. Meeting recommended levels for fruit/vegetable intake and physical activity was linked to better health and wellbeing. However, participants in greener areas who were physically active were more likely to feel alone and report poor health, and evidence for three-way interactions was weak.

Edyta Janus, Bożena Szewczyk-Taranek, Agnieszka Smrokowska-Reichmann · Folia Horticulturae · Poland

A questionnaire survey of 203 allotment garden owners in three Silesian cities, Poland, explored perceived functions and importance during the COVID-19 pandemic. Respondents over 61 years observed a generational shift from food cultivation to recreation, while no age group noted technological progress or new crops. Allotment gardens were crucial during the pandemic as a private, restriction-free space and a coping strategy for lockdown stress.

Neven Tandarić, Charles Watkins, Christopher D. Ives · Urban forestry & urban greening · Europe

Interviewing users of community and allotment gardens in Zagreb, Croatia, this study explored motivations for gardening and how different forms of garden management shape the generation of cultural ecosystem services (CES), supplementing and contextualizing responses with interviews of urban planners, academics, and gardening activists. Using the Fish et al. (2016) framework to identify CES in interviews, the study grouped gardeners' motivations into six categories: escape, usefulness and tradition, home-grown produce, socializing, wellness, and private oasis. Food production was found to be only of secondary importance as a motivator of urban gardening.

Lucia Masón, Lucia Manzione, Angelica Ronconi, Francesca Pazzaglia · International Journal of Environmental Research and Public Health · Europe

A within-subjects study of 65 second- and third-grade students in Europe compared a single regular lesson taught in a green school garden with a similar lesson taught in the classroom. Cognitive measures were selective and sustained attention and math calculation performance; affective measures were positive/negative mood and perceived environmental restorativeness. After the green-space lesson, children showed greater selective attention and better math calculation performance on two tasks than after the classroom lesson. Children with higher self-reported emotional difficulties showed a larger increase in selective attention, a statistically significant increase in positive affect, and a near-significant decrease in negative affect. Students also rated the green space as more restorative than the classroom.

Christopher Young, Nicole Bauer · Urban forestry & urban greening · Europe

This mixed-methods study examined the experience and effects of allotment garden loss among gardeners in Zurich, Switzerland, using field conversations with gardeners from an area slated for clearance and a natural experiment surveying the same gardener population before (2018) and after (2019) the clearance to measure effects on social networks, social support, and general and mental health. Qualitative analysis showed the (imminent) loss of the garden was a distressing experience for most participants, corroborated by descriptive survey results; ANCOVA models of the quantitative data supported a negative effect of garden loss on the number of social contacts and on emotional well-being, but not on other factors measured.