A growing list of resources and organizations that can help you get involved and increase your understanding:
Making Your Ditch More Eco-Friendly – Nanticoke Watershed Alliance (nanticokeriver.org)
Native Tree Guide | Friends of Native Trees in Takoma (fontt.org)
Maryland Native Plant Society – Home (mdflora.org)
A Community for Naturalists · iNaturalist
National Capital Region PRISM and Invasive Species (U.S. National Park Service) (nps.gov)