Piscataway Park grounds are open from dawn to dusk.
National Colonial Farm
Mid-March through mid-December:Tuesday through Sunday 10am-4pm.
Mid-December through mid-March: 10am-4pm on weekends only.
Guided tours of the Colonial Farm are offered at 1pm.
The ecosystem Farm is open to the public by appointment or during scheduled walking tours which leave the Visitor Center each weekend day at 11am.
The Accokeek Foundation administration office is open from 8am to 5pm, Monday through Friday. Please call 301.283.2113 for holiday or weather closing information.