By Anusuya Das and Kurt Stepnitz
Great Lakes resource managers are turning to biological controls to deal with aggressive invasive species. Garlic mustard, a woodland invader, smothers native plants and poisons the soil in forested areas, campgrounds and backyards. But in Europe, where it originated, the plant is kept in check by natural controls. Researchers think these controls will help limit invasive species in the Great Lakes region.