The Arnold Arboretum of Harvard University is a museum of trees teaching the world about plants. A 281-acre preserve laid out by pioneering American landscape architect Frederick Law Olmsted, the Arboretum stewards one of the world’s most comprehensive and best documented collections of temperate woody plants.

A 281-acre preserve in the heart of Boston, the Arnold Arboretum of Harvard University stewards one of the world’s most comprehensive and best documented collections of temperate woody plants, with particular focus on the floras of eastern North America and eastern Asia.

Experience the Arnold Arboretum’s world-class living collections from Director Ned Friedman’s perspective. Take this tour online or use the page for self-guided exploration while visiting the Arboretum in person.

At the Arnold Arboretum, we often reference our “founding public promise.” As the oldest public arboretum in the country, we have a long history—over 150 years—of serving as a public landscape, free and open to all. 1872–1927: Landscape Layout, Scholarship, and Beginning of Plant Collecting Trips

Reporting directly to the Provost of Harvard University, the Arnold Arboretum has served as an academic center for the study of plant biology, evolution, ecology, and horticulture for over a century. Today, the Arboretum shares its living museum collections and landscape with educators and students from around the world.

The Arnold Arboretum of Harvard University promotes and supports research consistent with its mission to discover and disseminate knowledge of the plant kingdom. To foster both independent and collaborative work, the Arboretum offers fellowships and awards to students, post-doctoral researchers, and professionals of the biological and ...

The Arnold Arboretum of Harvard University discovers and disseminates knowledge of the plant kingdom to foster greater understanding, appreciation, and stewardship of Earth’s botanical diversity and its essential value to humankind.

The Arnold Arboretum’s living collections are celebrated as some of the most comprehensive and best documented of their kind. Its rich holdings include temperate ligneous plants from around the world.

Help celebrate 150 years of the Arnold Arboretum! Join Now or Renew. As a member, you are part of a strong community of like-minded people who want to help the Arnold Arboretum flourish now and in the future.

Call the Arboretum Ambassadors at (857) 268-3185 and explain your situation and location. The Ambassador can help provide emergency access for first responders and lead them to your location. Ticks can often be found in natural areas like the Arboretum. Here are some tips to protect yourself: