Ballota nigra

Historical marker location:

Arboretum, District of Columbia

( Marker can be reached from Meadow Road Northeast, 0.1 miles east of Eagle Nest Road Northeast, on the left when traveling west.)

Black Horehound

The District has been the site of many historic protests and marches: Because of its status as the nation's capital, Washington, D.C. has been the site of numerous demonstrations and marches throughout U.S. history, including the March on Washington for Jobs and Freedom in 1963 and the Women's March in 2017.