Arnold Arboretum of Harvard University

A 281-acre preserve in the heart of Boston, the Arnold Arboretum of [Harvard University](https://www.harvard.edu/) 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. The [living collections](https://arboretum.harvard.edu/plants/), [herbarium](https://arboretum.harvard.edu/research/herbarium-of-the-arnold-arboretum/), and [library and archives](https://arboretum.harvard.edu/research/library/) support [research](https://arboretum.harvard.edu/research/) both in our own laboratories at Weld Hill and by scholars around the world. Free and open every day, this jewel in the [Emerald Necklace](https://arboretum.harvard.edu/about/the-emerald-necklace/) park system was designed by Frederick Law Olmsted and engages the public through [educational opportunities](https://arboretum.harvard.edu/education/) and [programs for all ages](https://arboretum.harvard.edu/visit/).