Agents of Discovery Mission Now Available!
Learn about trees and nature while playing a fun game on your smartphone on your next visit to the National Arboretum!
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Welcome to the U.S. National Arboretum
The grounds of the U.S. National Arboretum are open from 8 a.m. to 5 p.m. every day of the year except for Christmas Day. The National Bonsai & Penjing Museum is open 10 a.m. to 4 p.m. daily except for federal holidays from November through February. Admission to the grounds and museum is free and no tickets are needed.
NOTICE: Boxwood and Perennial Collections Closed through Summer 2023. In early August 2022, USDA-ARS discovered Boxwood blight on a small number of plants in the National Boxwood Collection at the U.S. National Arboretum (USNA). Because the collection has been frequently monitored, the disease was caught very early, giving staff time to implement measures to prevent spread. The Boxwood Collection (and the Perennial Collections that are in the same location) will be closed to the public until Summer 2023 to prevent spread within the collection and to other boxwood on the property. Please email ARSPress@usda.gov for more information.
Interactive Map
Looking for a plant? Try our interactive map and living plant database search, and plant browser, the Arboretum Botanical Explorer (ABE), designed for large-screened devices.
Go to ABE
What's New
Explore America’s Stately Treasures!
Do you know your state tree? Do you know why your state tree is what it is?
Every state and the District of Columbia has selected an official state tree, and these trees say something about the states they represent, the people who...
Have you tried our mobile app?
The U.S. National Arboretum mobile app will help guests navigate the vast grounds of the Arboretum via a digital map. A search feature will allow visitors to explore the collections and other features, learn about available visitor...