The Crooked River Cooperative Weed Management Area (CR CWMA) is a collaborative effort of local groups to manage invasive plant species across political boundaries for the benefit of all. A major part of invasive plant treatment is knowing how far the plant has spread, for this outlines treatment areas as well as areas at risk of exposure to these species. Help us keep track of the spread of these invasive plants by uploading photos of where you see them! less ↑