- Adkins Arboretum
 - Preserve and education centre on Maryland's Eastern Shore. - Arboretum at Flagstaff
- Home to a vast and diverse collection of high country wildflowers.
- Arboretum de Villardebelle
- Located in the south of France, near the Pyrenees and dedicated to conifers. Aims to help preserve rare and/or endangered species.
- Arboretum of Los Angeles County@
- Arboretum of Mardakan
- Acadamy of Sciences of Azerbaijan Republic.
- Arboretum Trompenburg
- Offers news, history, directions, and more. Also in Dutch.
- Arizona State University Arboretum
- View the unique collection and learn more about native and indigenous plant materials.
- Arnold Arboretum of Harvard University@
- Awbury Arboretum
- Located in 55 acres of beautiful scenery in the Germantown section of Philadephia.
- Blithewold Mansion, Gardens, and Arboretum
- Overlooking Narragansett Bay. Information on the estate, its collections, and a map.
- Boyce Thompson Arboretum State Park
 Bradenham Hall Garden & Arboretum
- Open to visitors on predesignated dates during Spring and Summer.- Dallas Arboretum
- Features superbly landscaped acres of towering trees, fragrant gardens, and lush lawns.
- Dawes Arboretum
- Founded in 1929 and including 1,149 acres of plant collections and natural areas.
- Eastwoodhill Arboretum
- Contains a mixture of shaded woodlands, open spaces, and flower gardens covering 70 hectares in New Zealand's historic Ngatapa district of Gisborne.
- Harold L. Lyon Arboretum
- Specialises in tropical plants, native Hawaiian plants, conservation biology, and Hawaiian ethnobotany.
- Hebert Arboretum, The
- Living tree library located within Springside Park in Pittsfield, Massachusetts.
- Holden Arboretum@
- Hoyt Arboretum
- Displaying a diverse collection of trees in a park-like setting.
- James Madison University - Edith J. Carrier Arboretum
- Outdoor living laboratory for professors and students, and a popular educational attraction for community residents.
- JC Raulston Arboretum
- Diverse collection of cold hardy temperate zone plants.
- Lovett Pinetum Charitable Foundation
- Information on pine trees including classification, morphology, diseases, climate, endangered species, and how to grow them, with many pictures.
- Morris Arboretum of the University of Pennsylvania@
- Morton Arboretum@
- Mount Pisgah Arboretum
- Plant collections within a 208 acre site that emphasize the native flora of the southern Willamette Valley region.
- North Carolina Arboretum
- Focuses on education, economic development, research, conservation, and garden demonstration with respect to landscape, architecture, and plant sciences.
- Royal Botanic Gardens, Kew: Arboretum
- Includes details of the historical development of the arboretum, and its role in the modern age.
- Sir Harold Hillier Gardens and Arboretum
- Gardens started by the late Sir Harold Hillier in 1953, and given in trust to Hampshire County Council in 1977.
- Strybing Arboretum & Botanical Gardens
- Celebrating the bond between people and plants, the San Francisco Botanical Garden is located within Golden Gate Park.
- United States National Arboretum@
- University of California, Santa Cruz Arboretum
- Climatic and topographic diversity allows experimentation with almost every species that might be grown along the coast between San Diego and Crescent City.
- University of Kentucky/Lexington-Fayette Arboretum Park
- 100 acres of preserved green space in the heart of Lexington, set up as joint project between the university and the local government.
- University of Michigan Nichols Arboretum
- Nestled in the hills adjacent to UM's Central Campus.
- University of Minnesota Landscape Arboretum
- Also includes information on the Andersen Horticultural Library.
- University of Nebraska, Lincoln - Botanical Garden and Arboretum
- Expanding collection of new and unusual plants designed to enhance the teaching, research, and public service mission of UNL.
- University of North Carolina at Wilmington Arboretum
- Provides valuable insight into the unique ecology of southeastern North Carolina.
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