Boyce Thompson Arboretum is the oldest and largest botanical garden in the state of Arizona. It is one of the oldest botanical institutions west of the Mississippi River. Founded in 1924 as a desert plant research facility and “living museum”, the arboretum is located in the Sonoran Desert on 392 acres (159 ha) along Queen Creek and beneath the towering volcanic remnant, Picketpost Mountain. Boyce Thompson Arboretum is on U.S. Highway 60, an hour's drive east from Phoenix and 3 miles (4.8 km) west of Superior, Arizona.
Metasequoia glyptostroboides, the dawn redwood, is a fast-growing, endangered deciduous conifer. It is the sole living species of the genus Metasequoia, one of three genera in the subfamily Sequoioideae of the family Cupressaceae. It now survives in the wild only in wet lower slopes and montane river and stream valleys in the border region of Hubei and Hunan provinces and Chongqing municipality in south-central China, notably in Lichuan county in Hubei. Although the shortest of the redwoods, it can grow to 167 ft (51 m) in height.
An arboretum is a botanical collection composed exclusively of trees and shrubs 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 are intended at least in part for scientific study.
The Wych Elm cultivar Ulmus glabra 'Camperdownii', commonly known as the Camperdown Elm, was discovered about 1835–1840 as a young contorted elm growing in the forest at Camperdown House, in Dundee, Scotland, by the Earl of Camperdown's head forester, David Taylor. The young tree was lifted and replanted within the gardens of Camperdown House where it remains to this day. The original tree, which grows on its own roots, is less than 3 m tall, with a weeping habit and contorted branch structure. The earl's gardener is said to have produced the first of what are commonly recognised as Camperdown elms by grafting a cutting to the trunk of a wych elm.
The San Francisco Botanical Garden at Strybing Arboretum is located in San Francisco's Golden Gate Park. Its 55 acres represents nearly 9,000 different kinds of plants from around the world, with particular focus on Magnolia species, high elevation palms, conifers, and cloud forest species from Central America, South America and Southeast Asia.
Kirstenbosch is an important botanical garden nestled at the eastern foot of Table Mountain in Cape Town. The garden is one of 10 National Botanical Gardens covering five of South Africa's six different biomes and administered by the South African National Biodiversity Institute (SANBI). Prior to 1 September 2004, the institute was known as the National Botanical Institute.
The Arnold Arboretum is a botanical research institution and free public park affiliated with Harvard University and located in the Jamaica Plain and Roslindale neighborhoods of Boston.
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 University of California, Irvine Arboretum is a 12.5 acres (5.1 ha) botanical garden and arboretum, part of the University of California, Irvine in Irvine, California. It is located north of the main UCI campus, on Campus Drive in Irvine, near the San Joaquin Wildlife Sanctuary and the Upper Newport Bay. The Arboretum carries out conservation activities and supports student and faculty research.
The Arboretum & Botanic Garden at the University of California, Santa Cruz, is located on the campus of the University of California, Santa Cruz, in the United States.
The Los Angeles County Arboretum and Botanic Garden, 127 acres, is an arboretum, botanical garden, and historical site nestled into hills near the San Gabriel Mountains in Arcadia, California, United States. Open daily, it only closes on Christmas Day.
Hoyt Arboretum is a public park in Portland, Oregon, which 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 accessible paved trails, and is open free to the public all year. About 350,000 visitors per year visit the arboretum.
Ulmus davidiana var. japonica, the Japanese elm, is one of the larger and more graceful Asiatic elms, endemic to much of continental northeast Asia and Japan, where it grows in swamp forest on young alluvial soils, although much of this habitat has now been lost to intensive rice cultivation.
Cylburn Arboretum [pronounced Sill·burn arr·burr·EE·tum] is a city park with arboretum and gardens, located at 4915 Greenspring Avenue, Baltimore, Maryland. It is open daily – excluding Mondays – without charge.
Ulmus 'Frontier' is an American hybrid cultivar, a United States National Arboretum introduction derived from a crossing of the European Field Elm Ulmus minor with the Chinese Elm Ulmus parvifolia in 1971. Released in 1990, the tree is a rare example of the hybridization of spring- and autumn-flowering elms. Tested in the US National Elm Trial coordinated by Colorado State University, 'Frontier' averaged a survival rate of 74% after 10 years.
Ulmus 'Sapporo Autumn Gold' is one of the most commercially successful hybrid elm cultivars ever marketed, widely planted across North America and western Europe, although it has now been largely supplanted by more recent introductions. Arising from a chance crossing of the Japanese elm and Siberian elm, seed was sent in 1958 by Prof. Nobuku Takahashi and his colleagues at the Sapporo Botanical Garden of Hokkaido University, Sapporo, to Eugene Smalley at the University of Wisconsin–Madison. The patent issued in 1975 has expired, and there are now no propagation restrictions. However, the tree has proven weak-wooded on maturity, and its popularity has waned in Europe as a consequence of susceptibility to wind damage.
The Siberian elm cultivar Ulmus pumila 'Ansaloni' was raised by the Ansaloni Nurseries, Bologna, c. 1933, from a tree introduced from the Far East in 1930.
The National Arboretum Canberra is a 250-hectare (620-acre) arboretum in Canberra, the national capital of Australia, created after the area was burned out as a result of the Christmas 2001 and 2003 Canberra bushfires: The Himalayan Cedar forest lost about one third of its trees, and the commercial Radiata Pine plantation was burned out, allowing the arboretum to be created.
Twee Riviere is a town in Sarah Baartman District Municipality in the Eastern Cape province of South Africa.
The Tokai Arboretum was the first large-scale silviculture experimental station in Cape Town, South Africa. The area of the main Arboretum, at Tokai Park, is 14 ha. Several adjacent compartments extend the area to 26 ha. The Arboretum was declared a National Monument in 1985, on its 100th anniversary. It contains stands of Eucalyptus and other trees from the original silviculture experiments in South Africa. In the 1990s a Gondwana Garden was created to display the plants typical of the Cape 100 million years ago.
