• Arnold Arboretum - A research and educational institution. It manages a collection of hardy trees, shrubs, and vines located on 265 acres and associated herbarium and library collections. Boston, Massachusetts, USA.
• American Association of Botanical Gardens and Arboreta - A professional association for public gardens in North America, supporting the public horticulture community in its mission to study, display, and conserve plants.
• Australian National Botanic Gardens - Australian plants, databases on living plants, herbarium specimens and photographs. Canberra, ACT, Australia.
• Birmingham Botanical Gardens - Volunteer based organisation promoting public knowledge of plants and gardens. Provides an image gallery. Birmingham, Alabama, USA.
• Cambridge University Botanic Garden - A 17 hectare garden close to the city center, with a diverse collection of plants. Cambridge, England.
• Cornell Plantations - The purposes of Cornell Plantations are: To hold, manage, protect, and enhance the living botanical collections and the natural areas and gorges of Cornell for the benefit and use of the university community and the public.
• Huntington Botanical Gardens - San Marino, California, USA. The gardens, on 150 acres, include 10 specialized gardens, several theme areas, and collections from other countries cultivated to share with others.
• Los Angeles County Arboretum and Botanic Garden - Its mission is to foster an awareness and appreciation of the role of plants in nature and in human affairs. Arcadia, CA, USA.
• Minnesota Landscape Arboretum - Its mission is to provide a community and a national resource for horticultural and environmental information, research and public education; to develop and evaluate plants and horticultural practices for cold climates.
• Morris Arboretum of the University of Pennsylvania - An interdisciplinary center that integrates art, science and the humanities.
• Missouri Botanical Garden - Located on a 79 acre site in St. Louis, the Missouri Botanical Garden is world-renowned for its fundamental botanical research, horticultural display and education programs.
• Morgan Arboretum - Teaching, research, and public education institution affiliated with Montreal's McGill University.
• Nichols Arboretum - Mission: To heighten the awareness of human relationships with the environment by considering issues of renewable natural resources conservation.
• North Carolina Botanical Garden - A regional center for research, conservation, and interpretation of plants located in Chapel Hill, NC.
• Royal Botanic Gardens, Kew - The website of Britain's major botanic garden with numerous links and many hosted websites. Kew, London.
• Strybing Arboretum & Botanical Gardens - Features a spectacular array of plants from the world's Mediterranean and mild temperate climates, to high-elevation tropical cloud forests. San Francisco, USA.
• The Chicago Botanic Garden - An Illinois Botanic Museum. Gardens, plants, flowers, greenhouses, educational classes, plant information. Events, visitor and membership information. Chicago, IL, USA.
• The National Botanic Garden of Wales - A visionary project and botanical science showcase built for the Millennium and beyond. Science programme includes systematics, biodiversity and conservation, sustainability and economic botany. Llanarthne, Carmarthenshire, Wales, UK.
• The Dallas Arboretum - Visitor and member information, educational programmes, map. Dallas, TX, USA.
• The University of California Botanical Garden - Diverse collections are grown on a hilly site overlooking the Berkeley campus, near the San Francisco Bay.
• The New York Botanical Garden, Bronx NY - The garden includes 28 speciality gardens including the Enid A. Haupt Conservatory, Everett Children's Adventure Garden, and a 40-acre never been clear cut forest.
• The United States National Arboretum - Overview, events and education programs, specialty gardens and horticultural practices, research, support opportunities, and site search.
• The Eden Project - Ecological project, growing tropical and temperate plants in giant biomes. Information for visitors and schools, online shop and scientific information. Cornwall, England.
• The Royal Botanic Garden, Edinburgh - Thirty-one-hectare gardens founded in the 17th century. Open to the public: a major tourist attraction. Edinburgh, Scotland.
• University of California, Santa Cruz (UCSC) Arboretum - The Arboretum occupies one of the most propitious horticultural sites in the world, part of the holdings of pioneer Henry Cowell. Climatic and topographic diversity allow experimentation with amost every species that might be grown along the coast between San Diego and Crescent City, and the diversity of the soils--the underlying rock includes granite, schist, limestone, and several types of sandstone--can scarcely be matched anywhere.
• University of British Columbia Botanical Garden and Centre for Plant Research - The web site of Canada's oldest university botanical garden. Current research themes include conservation, evolution (including molecular systematics), genomics (including the evolution of plant development) and plant breeding. The garden features a collection of over 7500 different taxa, many of which are of wild documented origin.
• University of Arizona Arboretum - History, how to get involved, calendar of events, and information about student projects. Tucson, Arizona, USA.