Massachusetts · Est. 1872
Arnold Arboretum of Harvard University
A museum of trees teaching the world about plants.
Founded
1872
Size
281 acres
Hardiness Zone
USDA Zone 6b
Best Season
May for Lilac Sunday, and October for autumn foliage.
About Arnold Arboretum of Harvard University
The Arnold Arboretum of Harvard University is a 281-acre preserve in the heart of Boston, serving as a living museum and botanical research institution. Designed by Frederick Law Olmsted, it is the second largest link in the Emerald Necklace and features over 15,000 accessioned plants. The arboretum emphasizes temperate trees, shrubs, and vines from eastern North America and eastern Asia.
History & Heritage
Established in 1872, the Arnold Arboretum is the oldest public arboretum in North America. It was founded through land and financial gifts from Benjamin Bussey and James Arnold, with Charles Sprague Sargent serving as its first director. A unique agreement with the City of Boston ensured public access through a 1,000-year lease. The arboretum has a long history of plant exploration, particularly in East Asia, led by notable botanists like Ernest Henry Wilson.
Signature Feature
Peters Hill
Peters Hill is the tallest of the four notable hills within the Arnold Arboretum, standing at 240 feet (73 meters). It offers panoramic views of the Boston skyline and the surrounding landscape. The hill is a popular destination for visitors seeking scenic vistas and a peaceful retreat within the city.
Photo Gallery
Autumn foliage at the Arnold Arboretum.
A scenic path winding through the arboretum's diverse plant collections.
Mature trees providing shade and beauty in the park.
Notable Collections
Acer Collection
A comprehensive collection of maple species from around the world.
Larz Anderson Bonsai Collection
A historic collection of bonsai and penjing displayed from mid-April to late October.
Bradley Collection of Rosaceous Plants
A specialized collection featuring plants from the rose family.
Conifer Collection
A diverse array of cone-bearing seed plants, including pines and hemlocks.
Recognition & Awards
- National Historic Landmark
- National Register of Historic Places
Editorial Standards
This profile was researched and written by the BotanicalGardens.blog editorial team, which includes certified Master Gardeners and horticultural writers with field experience across the United States. All admission prices, hours, and garden details are verified against official garden websites and updated May 2026. If you notice an inaccuracy, please contact us.
Plan Your Visit
May for Lilac Sunday, and October for autumn foliage.
Address
125 Arborway, Boston, MA 02130
Phone
617-384-5209
Hours
Open daily from dawn to dusk.
Admission
Free for all to explore.
Insider Tips
- 1Visit on the second Sunday in May for the annual Lilac Sunday celebration.
- 2Stop by the Hunnewell Building Visitor Center for maps and information.
- 3Wear comfortable walking shoes to explore the 281-acre landscape.
- 4Bring a camera to capture the stunning seasonal changes and diverse plant life.
Nearby Attractions
- Franklin Park Zoo (1.5 miles)
- Jamaica Pond (1.0 miles)
- Isabella Stewart Gardner Museum (2.5 miles)