Sequoiadendron giganteum, also known as the giant sequoia, giant redwood or Sierra redwood is a coniferous tree, classified in the family Cupressaceae in the subfamily Sequoioideae. Giant sequoia specimens are the most massive trees on Earth. They are native to the groves on the western slopes of the Sierra Nevada mountain range of California but are grown around the world.
The H. H. Hunnewell estate in Wellesley, Massachusetts was the country home of H. H. Hunnewell (1810–1902), containing over 500 species of woody plants in 53 families. The estate remains in the family, and includes the first (1854) topiary garden in the United States, featuring intricate geometrically clipped native Eastern white pine and Eastern arborvitae. A collection of specialty greenhouses feature over 1,000 plant species. The estate has been cared for by six generations of the Hunnewell family.
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 Sister Mary Grace Burns Arboretum, on the campus of Georgian Court University, in Lakewood Township, New Jersey, United States, was once the landscaped park for the winter home of George Jay Gould, millionaire son of railroad tycoon Jay Gould.
The University of Delaware Botanic Gardens are botanical gardens and an arboretum located on the campus of the University of Delaware, in Newark, Delaware, United States. The gardens are open to the public without charge.
The Salisbury University Arboretum, formerly known as the Salisbury State University Arboretum, is an arboretum on the campus of Salisbury University, 1101 Camden Avenue, Salisbury, Maryland.
The Fell Arboretum is an arboretum located across the campus of Illinois State University in Normal, Illinois.
Peavy Arboretum is an arboretum operated by Oregon State University and located on Arboretum Road, Corvallis, Oregon. It is open to the public daily without charge.
Tyler Arboretum is a nonprofit arboretum located at 515 Painter Road, Middletown Township, Delaware County, Pennsylvania. It is open daily except for major holidays; an admission fee is charged to non-members.
Adelges tsugae, the hemlock woolly adelgid or HWA, is an insect of the order Hemiptera native to East Asia. It feeds by sucking sap from hemlock and spruce trees. In its native range, HWA is not a serious pest because populations are managed by natural predators and parasitoids and by host resistance. In eastern North America it is a destructive pest that threatens the eastern hemlock and the Carolina hemlock. HWA is also found in western North America, where it has likely been present for thousands of years. In western North America, it primarily attacks western hemlock Tsuga heterophylla and has only caused minor damage due to natural predators and host resistance. Accidentally introduced to North America from Japan, HWA was first found in the eastern United States near Richmond, Virginia, in 1951. The pest is now found from northern Georgia to coastal Maine and southwestern Nova Scotia as well as areas of western Michigan near the eastern Lake Michigan shoreline. As of 2015, HWA has affected 90% of the geographic range of eastern hemlock in North America.
The Arboretum de Balaine is a historic arboretum located in Villeneuve-sur-Allier, Allier, Auvergne, France. It is open daily in the warmer months; an admission fee is charged.
The Arboretum d'Amance is an arboretum located in Champenoux, Meurthe-et-Moselle, Lorraine, France. It is managed by the Centre INRA de Nancy, a branch of the Institut National de la Recherche Agronomique (INRA), and open on the third Saturday of the warmer months; an admission fee is charged.
Wojsławice Arboretum is an arboretum, located in Wojsławice, Dzierżoniów County, Lower Silesian Voivodeship, in south-western Poland. It occupies an area of 62 ha.
The Exotenwald Weinheim is a forest arboretum located beside the Schlosspark in Weinheim, Baden-Württemberg, Germany. It is open daily without charge.
The Botanischer Garten der Universität Tübingen, also known as the Botanischer Garten Tübingen or the Neuer Botanischer Garten Tübingen, is a botanical garden and arboretum maintained by the University of Tübingen. It is located at Hartmeyerstrasse 123, Tübingen, Baden-Württemberg, Germany, and open daily.
The Kaldenkirchen Sequoia Farm is a German arboretum that has been used as a biological institute for many years. Part of the protected area in the city of Nettetal, it is situated in the "Kaldenkirchen Grenzwald". Nettetal lies in the Lower Rhine region of Germany.
Peter Del Tredici is an American botanist and author. He is a former senior research scientist at Arnold Arboretum for 35 years and a lecturer at the Harvard Graduate School of Design. He was appointed curator of the Larz Anderson Bonsai Collection in 1982 and was editor of the journal Arnoldia from 1989 to 1992.
