(DC) (Rock Creek Conservancy) Join Rock Creek Conservancy, the National Park Service, and fellow Weed Warriors for this invasive plant removal restoration event in Rock Creek Park. Invasive plants are a major threat to our fragile forests, and stopping their spread helps allow native plants to thrive in the understory. This event is part of an area-wide volunteer-powered effort to help rescue our public parks and green spaces from non-native invasive species.