Research & reports

K. Haggard, Phillip J. Cooper · Solar today · United States (California)

The Tierra Nueva Cohousing Project in California comprises living units, a common house, community orchard, community gardens, play space, future shop space, and parking. The units incorporate thermal mass, solar heating, passive solar cooling, and perimeter insulation on slabs. The design of the project was collectively agreed upon by the entire community.

Hyeong-Seok Choi, Yoshiyuki Amemiya · Journal of The Japanese Institute of Landscape Architecture · Japan

Artificial planting soil layers used in settings such as rooftop gardens typically have a two-layer structure: a coarse drainage layer and a planting layer. Assuming no irrigation, this study examined the required layer thickness based on soil physical properties and weather conditions. Using 30 years of rainfall records for Tokyo, the logarithmic cumulative distribution of the number of days between rainfalls was well fitted by a normal distribution, with the number of days between rainfalls corresponding to 95% and 99% occurrence probabilities being 29 and 64 days, respectively. Numerical calculations for a two-layer system with a 100 mm lower layer examined the relationship between layer thickness and the time until the planting layer wilts on average from initial moisture; at 99% probability, the required planting layer thickness was 236 mm, roughly half the 424 mm required for a single-layer system.

Lucy Bradley, Jean C. Stutz · HortTechnology · United States

The University of Arizona Cooperative Extension's home horticulture World Wide Web site for Maricopa County, "Environmentally responsible gardening and landscaping in the low desert," delivers research-based, regionally appropriate public information. It provides self-service access to prepared text and high-quality images that could not be distributed economically through traditional print methods, plus interactive functionality for submitting questions.

J. Lambie, W.T. Osborn, A. Dominski · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · United States (Florida)

The Florida House Foundation, Inc. (FHF), a non-profit regional economic incubator, developed a demonstration house and yard in Sarasota County, Florida, in partnership with the Cooperative Extension Service. This model home, designed to appeal to consumers and be marketable by the construction industry, aimed to stimulate interest in solar and resource-efficient technologies. It incorporated active and passive design, solar photovoltaic and water heating systems, daylighting, cisterns, gray water, and native edible landscaping.

William C. Olien, Joe G. Harper, Katherine Ashe · HortScience · United States

A Teaching Fruit-Garden Project paired Horticulture and Agricultural Education classes at a US university (1995) to build teaching materials for college courses, area K-12 schools, and community members interested in fruit and edible landscaping, organized around team coordination, writing across the curriculum, and hands-on learning. The horticulture course produced a proposal for low-maintenance, sustainable fruit production including species and cultivar choices, a management plan, and a preliminary site plan; the agriculture education course produced self-contained teaching modules with sample lesson plans for K-12 teachers. Students reported liking the cross-class collaboration and the sense that their work served the community.

Lee M · PubMed · Ethiopia

In Ethiopia, urban agriculture faces significant challenges due to government disapproval of public land use for farming and difficulty in obtaining credit. A 1983 survey in Addis Ababa found that 17% of 1352 households produced their own food on less than 25 sq. meters, with 90% of non-farmers citing lack of land. Despite urban agricultural cooperatives demonstrating 70% higher member income, their lack of government legalization prevents access to loans for productivity improvement.

· PubMed · Global

This paper emphasizes the need for technological infrastructure to maximize the value of medicinal plants within primary health care (PHC). The WHO Programme on Traditional Medicine highlights the importance of appropriate drug availability in PHC and recommends cultivating medicinal plants in home or community gardens. It advocates for strengthening data gathering and analysis capabilities for economic mapping of medicinal flora in developing countries and for clinical research on the safety and efficacy of herbal medicines used by traditional health practitioners.

K. Bondari, E. D. Threadgill, J. Bender · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · United States

This study conducted two experiments on tilapia culture. Experiment I aimed to determine the potential of Tilapia aurea in an integrated irrigation system for algae removal and resource recovery. Experiment II investigated the potential use of blue tilapia in urban farming, utilizing a passive solar greenhouse, an indoor pond for overwintering, and an outdoor pond for summer growth.

W.P. Holtz, H.J. Mooy · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · United States

A 1982 final report presenting the design and construction of a community greenhouse in Newark, New Jersey, United States. It includes photographs and drawings of the greenhouse construction along with a demonstration of budgeting information.

· Nutrition & Food Science · Global

The Institute of Biology held a symposium to assess the value of vegetables for feeding people and livestock. The symposium considered the energy, labor, and monetary inputs required for vegetable production across various scales, from allotments to large market gardens. Discussions also included the role of traditional and unconventional animal species within vegetable growing systems.

William E. Roweton · Psychological Reports · Global

This study discussed the instructional advantages of growing vegetable seedlings in an introductory child psychology course. The project drew students' attention to the importance of nutrition in child development, as well as the popularity and practicalities of urban gardening. Additionally, the activity of "raising" plants proved to be a provocative analogy to "rearing" children.

M. A. Latheef, R.D. Irwin · The Canadian Entomologist · United States

A paper on field experiments conducted in southside Virginia, United States, sought to quantify the effect of companion plants (repellent herbs) on major lepidopteran pests of cabbage. It cites an estimated 33 million home and community gardens grown in the United States during 1976 and 1977 as context, noting that claims about companionate planting's protective effects made by organic growers had little field evidence to substantiate them. The abstract does not report the experiment's specific results.

M. Klein, M. Smith · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · United States

This bibliography lists pamphlets and newsletters related to organizing community gardens in the United States. It includes resources such as "Community Garden Handbook," "Guide to Community Garden Organization," and "Profiles of California Community Garden Projects." The bibliography also references the 1977 Gallup Poll results on gardening in America.

E. F. Schumacher · Blond & Briggs · United Kingdom

E.F. Schumacher's 1973 book challenges the mainstream "bigger is better" economic ethos, advocating small, "appropriate" technologies as an alternative. Its four parts cover the modern economy, resources, the developing world, and organization/ownership; in 1995 the Times Literary Supplement named it one of the 100 most influential books since World War II.

Eva C. Worden, Adrian Hunsberger, John McLaughlin · EDIS · United States (Florida)

This publication was developed to assist those who wish to form a community garden in Florida. A community garden is a collaborative greenspace where participants share in both maintenance and rewards. This document is part of a series from the Environmental Horticulture Department at the University of Florida.

Eva C. Worden · EDIS · United States

Landscaping in urban settings is described as offering a significant opportunity to contribute to sustainability, with edible landscaping — landscapes that incorporate plant species for human consumption — cited as one such opportunity. This document, ENH971, is part of a series from the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, originally published in May 2004.