Research & reports

埼玉県 · 埼玉県 · Japan

This Saitama Prefecture guide on rooftop and wall greening methods cites the Building Standards Act Enforcement Order's live-load table and explains that an existing ordinary house roof can carry roughly only 60 kg/sqm once seismic force is factored in. Covering a roof with 10 cm of natural soil (specific gravity 1.6-1.8) would add 160-180 kg/sqm, exceeding that limit, so it recommends lightweight artificial soils (specific gravity 0.6-1.0) and notes the need for root-barrier sheets to protect waterproofing layers and for automated irrigation.

Kratky B. A. · Acta Horticulturae · United States

Presents three non-circulating, low-cost hydroponic methods for growing lettuce in which roots grow into a static nutrient solution with no pump, air stone, timer, or electricity required. The passive approach can be built with simple containers/tanks and reduces additional labour.

· Water, Air, & Soil Pollution · Global

Irrigates potted lettuce, carrots and peppers with untreated and treated (settling plus slow sand filtration) household greywater over eight weeks and tests edible portions for faecal indicator organisms.

Bruno Martins Dala Paula, Ivana Cristina Lovo, José Delázaro Filho · Urban Agriculture Magazine · Brazil (Belo Horizonte)

This project in Belo Horizonte, Brazil, involved seven households sharing a community garden. Participating families collected household organic waste, with five families collecting 5 kg every 8-10 days. From March 25 to September 25, a total of 420 kg of organic waste was collected and used for collective compost production, which was then distributed to all garden members.

Jin-Woo Choi, Hag-Kee Kim, Kyong-Jae Lee, Hyun-Kyung Kang · Journal of the Korean Institute of Landscape Architecture · South Korea

This study analyzed the economics and growth characteristics of native and imported ground cover plants in a new shallow soil rooftop gardening method, using 13cm soil thickness, on the rooftop of the Korean National Housing Corporation. The new method cost 45,000 won/m², which was 50% less expensive than existing methods. Native ground cover plants and some imported species showed increased cover rate, live weight, and dry weight, with improved growth, though some species required weed maintenance.

Vikram Bhatt, Leila Marie Farah, Nik Luka, Jeanne M. Wolfe · Open House International · Canada (Montréal)

The "Edible Campus" project, launched in Montréal in spring 2007, was an action-research initiative aimed at transforming underutilized urban spaces into productive areas. It involved citizens in creating green community spaces by incorporating productive container growing on a concrete-covered part of McGill University's downtown campus. This project investigated how to enhance urban food security through increased urban food production and demonstrated how "edible landscapes" can be integrated into urban spaces.

Anna Griffiths · Eureka street · Global

This article presents the events and decision-making processes that occurred during a community apricot jam-making session. It suggests that Niccolo Machiavelli would have found the complex politics, emotions, and diverse personalities in the community garden challenging, observing alternating forms of governance such as benign dictatorship, bureaucracy, and popular democracy.

Michael Sifferman · Digital Commons - CSUMB (California State University, Monterey Bay) · United States (California)

For a capstone project, a school garden comprising an herb, vegetable, and flower garden was built at Meadowlark Elementary. The author taught garden-related lessons to kindergarten classes, integrating various subject standards. A random survey of parents and teachers was conducted to assess the project's usefulness.

Martina Předotová, Eva Schlecht, Andreas Buerkert · Nutrient Cycling in Agroecosystems · Niger (Niamey)

An experiment quantified nitrogen and carbon losses from animal manure stored in urban vegetable gardens in Niamey, Niger. During a 3.5-month dry season experiment, cumulative gaseous nitrogen losses were highest (0.11 g kg−1 manure DM) in the uncovered control, decreasing by 72% with plastic sheet roofing and 50% with roofing plus rock phosphate. In a second 3.5-month rainy season experiment, carbon losses from the control were 164 g kg−1 manure DM, reduced to 77% and 65% of the control by roofing and roofing plus rock phosphate, respectively. Leaching losses during the rainy season were only observed for the unroofed control.

Duan Yuan-gu · · China

This study analyzed community outdoor environment spaces, focusing on deficiencies in current community garden design. Drawing from traditional Chinese housing psychology, it summarized the necessity of community private spaces and proposed design techniques.

Ernarosa Tominich · Educational Media Reviews Online · United States (Chicago)

"Simple Living with Wanda Urbanska" is a 2008 documentary exploring themes of land use, energy conservation, and urban "green earth" movements in major American cities. Host Wanda Urbanska conducts interviews and visits projects like green rooftop gardens and city farms on vacant lots. The documentary features a Chicago family demonstrating a "green" lifestyle, including communal gardening and local shopping.

Hubert Więckowski · Jagiellonian University Repository (Jagiellonian University) · Germany (Berlin)

This article describes the 8th edition of the Synaxis Baltica Summer Academy, organized in Potsdam and Berlin, Germany. It presents the significant aims of the Synaxis Baltica Summer Academy, established in 2002, and briefly describes the main topics of the 8th academy, which included community gardens and guerilla gardening. Information about lectures, experts, and participants' tasks and obligations is also provided.

Yael Kemelmajer, Laura Cecilia De Luca · · Global

This work, part of the Programme of Food Self-Production, studied the influence of moon phases on horticultural crop productivity in urban vegetable gardens. Adapting agrarian science mechanisms, it incorporated popular knowledge regarding lunar influence on crops. Broccoli and lettuce were planted during crescent and waning moon phases, and differences in productivity were found for both species according to these moments.

Femke Hoekstra, R. van Veenhuizen · · Global

This article focuses on the role of urban agriculture in linking relief, rehabilitation, and development following disasters or emergency situations. It notes that many people in refugee situations establish small-scale gardening or micro-technologies like container gardening to improve food security. The article highlights urban agriculture's multiple functions, including community building and sustainable environments.

Delia Nicoleta Vieru, Narcis Paul Vieru · DOAJ (DOAJ: Directory of Open Access Journals) · Global

This descriptive article on composting states that about half of household waste consists of food remains, vegetable, and garden waste, and that over 50% of waste is organic material that ends up in storage sites, cesspools, or is burned, causing significant pollution. As an alternative, it describes transforming organic material through microbial, biochemical, chemical and physical processes into a humus-like material called compost. Producing quality compost requires managing the pile's dimensions, humidity, structure, and composition so decomposition agents (bacteria, fungi, mites, springtails, woodlice, worms, millipedes) have an ideal, nutrient-rich substrate; these agents need nitrogen ("green" elements, from food remains, cut grass, and green leaves) alongside carbon ("brown" elements, from wood chips, dry leaves, and sawdust), maintained at roughly a 30:1 brown-to-green ratio through alternating layers. The article states that producing compost in schools can bring the whole school community together for environmental work, contributing to natural resource recirculation, community education about compost's benefits, a shift in cultural attitudes toward waste, reduced food-remainder volume from school canteens, student involvement in extracurricular activities, and fertile soil for school gardens and planting. The abstract text is truncated at the end, cutting off its description of composting's benefits as a fertilizer.

Bernard Kratky · Acta Horticulturae (University of Hawaii) · United States

Developed by Bernard Kratky at the University of Hawaii and first published in Acta Horticulturae in 2009, the Kratky method is a passive, non-circulating hydroponic technique requiring no electricity or pumps. Plants sit in net pots floating over a nutrient reservoir; as the water level drops, an air gap forms between roots and liquid, letting "oxygen roots" develop. Considered the simplest hydroponic system, it suits leafy greens but not water-hungry crops.

· International Journal of Agricultural Sustainability · Malawi

Case study in two Malawian districts finding that adopters of low-cost treadle pump irrigation had higher net farm income per hectare than non-adopters.

Richard W. Reynolds · · Global

This 2008 global handbook, "On Guerrilla Gardening," explores the motivations and methods of guerrilla gardening, a movement involving illicit cultivation of public land. The book compiles advice from guerrilla gardeners in thirty countries on topics such as plant selection, coping with environmental conditions, seed bombing, and propaganda. It also traces the historical development of the movement from the 17th century to the 1970s.

Consuelo Montes Rojas, Víctor Felipe Terán Gómez, Diego Fernando Ortiz Tovar · DOAJ (DOAJ: Directory of Open Access Journals) · Colombia (Popayán)

This research aimed to design a hydro-organic system for vegetable production in small areas to contribute to urban food security and solid waste utilization in Popayán, Colombia. An alternative system was designed using recycled materials and evaluated with three nutritional treatments using cilantro as a biological indicator. The system achieved productions of up to 627 g m-2, surpassing traditional agriculture (227 g), and the common nutritional solution was identified as the best nutritional source.

Paula Vergili Pérez, Mariângela Brito Freiberger, Ubirajara Contro Malavasi, Marinelva Curti, Marlene Matos Malavasi · Varia Scientia - Ciências da Saúde · Brazil

A diagnostic study in Marechal Cândido Rondon, Brazil, interviewed a sample of owners or users of 3,897 urban non-built lots to understand agricultural production. The most frequent reasons for lot use were producing vegetables and fruits for personal consumption and agricultural work for leisure. Common crops identified included cassava, corn, peanuts, beans, sweet potato, pumpkin, lettuce, orange, lemon, banana, and mango.

Public Affairs Office · DigitalCommons - CalPoly (California State Polytechnic University) · United States (Los Angeles)

Students and faculty at Cal Poly cultivated 4,000 fruit and vegetable plants on 180 vertical panels, which are intended for mounting on commercial building walls in Los Angeles' inner city. These vertical panels were designed to maximize growing space in congested urban locations. The project aims to provide a practical solution for accessing fresh, affordable produce.

Consuelo Montes Rojas, Víctor Felipe Terán Gómez, Diego Fernando Ortiz Tovar · DOAJ (DOAJ: Directory of Open Access Journals) · Colombia

This research aimed to design a hydro-organic vegetable production system for small areas in Popayán, Colombia, utilizing recycled materials and urban solid waste. The system was evaluated using three nutritional treatments (organic leachate, supplemented organic leachate, common nutrient solution) with cilantro as a biological indicator. The urban vegetable production system achieved yields of up to 627 g m-2, surpassing traditional agriculture (227 g), with the commercial nutrient solution identified as the best nutritional source.

Wang Ai-fe · Shanxi Architecture · Global

This paper discusses the function and current state of residential community garden scenery, thoroughly examining design principles based on factors like region, function, nature, system, and comprehension. It concludes that residential community garden scenery design must adopt measures suited to local conditions and comply with nature to meet contemporary demands.

Peng Yi-jun · Anhui nongye kexue · Global

This discussion examined the necessity and construction methods of rooftop gardens, along with the key considerations and challenges during their development. It also covered their developmental history, current status, and future prospects.

Ryozo Noguchi, Shuya Abe, Takahiro Saito · Agricultural Information Research · Japan

This study in Japan constructed a design model for Japanese hoes used in community and home gardens, aiming to tailor them to users' physiques, strength, and ease of use, employing Kansei Engineering. Based on three-point task analysis and extracted Kansei elements of usability, a network-structured design model was proposed. The relationships between handle length and ease of work, and moment of inertia and ease of swinging, were experimentally determined using the Magnitude Estimation method, revealing the potential to evaluate commercial hoes and improve designs according to user height and muscle strength.