United States National Arboretum

The Arboretum was established by an act of Congress on March 4, 1927. In 1973, the National Arboretum was placed on the National Register of Historic Places, identifying it as worthy of preservation for its historic value. It is administered by the Secretary of Agriculture and is part of the Agricultural Research Service. United States National Arboretum, Washington, D.C., is a place which was opened in order to educate the civilians about the preservation and varieties of trees and shrubs.

A herbarium containing 500,000 dried plants is maintained for technical reference. It is an intermediate climatic zone, which makes possible the growing of trees and shrubs from a relatively wide range of climatic situations. Plants are arranged in different combinations throughout the Arboretum. Nine miles of paved roads provide access to the principal plant groups.

The Arboretum grounds are open every day of the year except Christmas. The visiting hours all year round are as follows:
Monday through Friday - 8 a.m. to 5 p.m.
Saturday and Sunday - 10 a.m. to 5 p.m.
The Administration Building and the Information Center are open on weekdays from 8:00 a.m. to 4:30 p.m. and on weekends for scheduled events only. The greenhouses are not open to the public. The National Bonsai Collection is open daily from 10:00 a.m. to 2:30 p.m.

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Contact Information

United States National Arboretum
3501 New York Avenue, NE
20002 Washington, D. C

Tel. +12022452726

http://www.usna.usda.gov