The Herbarium Goes Digital!
Volunteers needed! Learn about the U.S. National Arboretum Herbarium’s digitization project and how you can get involved.
Learn more!
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. Admission to the grounds and museum is free and no tickets are needed. Please note that after 2 p.m. on weekdays, all cars must enter via New York Ave.
If you have not yet been vaccinated, please wear a mask and maintain social distancing .
The Administration Building is currently closed to the public. Restrooms are available in the Arbor House near the R Street gate, in the Asian Collection, and near the Azalea Collection.
Look for an orientation sign in parking lots for a map and other information. Visitor guides are not currently available. The Arboretum’s free app, available in the App Store and Google Play, is the best way to explore with maps, a plant finder, and specialized tours.
Thank you for visiting and for helping to keep staff and fellow visitors safe!
Save the Date!
New virtual program coming soon!
Pressing Matters: Part 4
From Field to Folder
Wednesday, November 17th 2:00 pm
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Looking for a plant?
Our interactive map, the Arboretum Botanical Explorer (or “ABE”), is the perfect tool for the job.
Find plants, benches, and more from the comfort of your home computer.
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...
Koi Return to the Administration Building Pool!
After nearly a decade away, about 20 koi are returning to the aquatic garden at the Arboretum’s Administration Building on September 24! Their new and improved home features updated, robust filtration and fountain systems to...
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...