GARDENING MANOR HOUSE SPECIAL EVENTS EDUCATION FARMER'S MARKETS DIRECTIONS COMMENTS GSGP HOMEPAGE FCPA HOMEPAGE Green Spring is a 27-acre park located in Alexandria, Virginia, just a few minutes travel from the Nation's Capitol. Through its gardens and educational programming, Green Spring advances the awareness and practice of gardening in Metropolitan Washington, DC. Visitors are invited to ...

Economic and Ecosystem Impacts of Aquatic Invasive Species. The introduction of nonindigenous aquatic invasive species is an ongoing problem that is increasing in frequency. Although the zebra mussel may be the most widely known invader, there are numerous other nonindigenous invertebrates, fish and plants that are causing significant damage to coastal and freshwater ecosystems, and to the ...