An arboretum in a general sense is a botanical collection composed exclusively or very largely of trees of a variety of species. Originally mostly created as a section in a larger garden or park for specimens of mostly non-local species, many modern arboreta are in botanical gardens as living collections of woody plants and is intended at least in part for scientific study.
The Arnold Arboretum of Harvard University is a botanical research institution and free public park, located in the Jamaica Plain and Roslindale neighborhoods of Boston, Massachusetts. Established in 1872, it is the oldest public arboretum in North America. The landscape was designed by Charles Sprague Sargent and Frederick Law Olmsted and is the second largest "link" in the Emerald Necklace. The Arnold Arboretum's collection of temperate trees, shrubs, and vines has a particular emphasis on the plants of the eastern United States and eastern Asia, where arboretum staff and colleagues are actively sourcing new material on plant collecting expeditions. The arboretum supports research in its landscape and in its Weld Hill Research Building.
The Bartlett Arboretum and Gardens in Stamford, Connecticut, contains 93 acres of parkland, gardens, landscapes, and hiking trails that focus on the regional plants, ecology and character of Southwestern New England. The Arboretum is open and accessible to the public every day of the year and is located at 151 Brookdale Road.
The Arboretum at Gustavus Adolphus College, also known as TheArboretum at Gustavus or colloquially as The Arb, is on the campus of Gustavus Adolphus College in Saint Peter, Minnesota, United States. It contains a number of botanical gardens and a 125 acre arboretum with its first trees planted as small seedlings in 1973 on agricultural land. The arboretum was formerly named for Carl Linnaeus, a Swedish botanist, from 1988 to 2021.
The Holden Arboretum, in Kirtland, Ohio, is one of the largest arboreta and botanical gardens in the United States, with more than 3,600 acres (1,500 ha), including 600 acres (240 ha) devoted to collections and gardens. Diverse natural areas and ecologically sensitive habitats make up the rest of the holdings. Holden's collections includes 9,400 different kinds of woody plants, representing 79 plant families.
The Donald E. Davis Arboretum, in Auburn, Alabama, United States, is a public native plants museum, and botanical arboretum with educational facilities, event spaces, and a conservation program. Its grounds, covering 13.5 acres of Auburn University's campus, include cataloged living collections of associated tree and plant communities representative of Alabama's ecosystems, among which is mixed oak forest, carnivorous bog, and longleaf pine savanna. The living collections include more than 1,000 plant types, including 500 different plant species, with over 3,000 cataloged specimens. The Arboretum contains over a mile (2km) of interwoven walking trails that meander through various southeastern biotopes.
The University of Alabama Arboretum is a 60-acre arboretum located near the intersection of Veterans Memorial Parkway and Pelham Loop Road in Tuscaloosa, Alabama.
The Iowa Arboretum is a nonprofit arboretum located in Madrid, Iowa that encompasses 160 acres (65 ha). The grounds are open daily from sunrise to sunset.
The State Arboretum of Utah is an arboretum located across the campus of the University of Utah in Salt Lake City, Utah, as well as on an additional site at Red Butte Garden and Arboretum. The campus grounds and the Red Butte Garden are open to the public every day. The conservatory is open by appointment only.
Willowwood Arboretum, 131 acres (53 ha), is an arboretum and public park located at 300 Longview Road, Chester Township, New Jersey, Morris County, New Jersey. It is part of the Morris County Park System and is open to the public daily.
Hoyt Arboretum is a public park in Portland, Oregon and is part of the complex of parks collectively known as Washington Park. The 189-acre (76 ha) arboretum is located atop a ridge in the Tualatin Mountains two miles (3.2 km) west of downtown Portland. Hoyt has 12 miles of hiking trails, two miles of accessibility paved trails, and is open free to the public all year. About 350,000 visitors per year visit the arboretum.
The University of Wisconsin–Madison Arboretum is a teaching and research facility of the University of Wisconsin–Madison and the site of historic research in ecological restoration. In addition to its 1,260 acres (5 km2) in Madison, Wisconsin, the Arboretum also manages 520 acres (210 ha) of remnant forests and prairies throughout Wisconsin. It was designated a National Historic Landmark in 2021, in recognition for its role as a pioneer in the field of ecological restoration.
Chadwick Arboretum is a 62 acres (25 ha) arboretum on the Agriculture campus of The Ohio State University, in Columbus, Ohio, United States. The main arboretum collection is located just across Lane Avenue from the Schottenstein Center with its other collections nearby. The arboretum is open daily without charge.
Wind River Arboretum, part of the Wind River Experimental Forest, is a research arboretum in the Gifford Pinchot National Forest in Carson, Washington, United States. It is the oldest arboretum in the Pacific Northwest.
The State Botanical Garden of Georgia is a botanical garden of 313 acres in the United States, with a conservatory operated by the University of Georgia. It is located at 2450 South Milledge Avenue, Athens, Georgia.
The North Carolina Arboretum is an arboretum and botanical garden located within the Bent Creek Experimental Forest of the Pisgah National Forest at 100 Frederick Law Olmsted Way, southwest of Asheville, North Carolina near the Blue Ridge Parkway. It is open daily except for Christmas Day. There is no admission charge, but some parking fees do apply.
The Old Forest Arboretum of Overton Park is a forest tract and natural arboretum located in Overton Park, Memphis, Tennessee. It is open to the public daily without charge. The forest was placed on the National Register of Historic Places in 1979 as part of the Overton Park Historic District. Tree identification began in 1997, with some 70 tree species identified by 2002 when it was certified as an arboretum. Today the arboretum contains walking trails with 49 tree markers identifying 32 species. Approximately three-fourths of the Arboretum was designated as the Old Forest State Natural Area in 2011.
The University of Georgia Campus Arboretum is an arboretum located across the University of Georgia campus in Athens, Georgia. It is open daily without charge.
The St. George Village Botanical Garden is a botanical garden with arboretum located at 127 Estate St. George, Frederiksted, Saint Croix, U.S. Virgin Islands. It is open daily except Christmas; an admission fee is charged.
The University of Georgia's main campus sits across from the college town of Athens, Georgia, whose dominant architectural themes are Federal—the older buildings—and Classical and Antebellum style. The university is home to the University of Georgia Campus Arboretum.
