Carol Savonen’s latest column for the Statesman-Journal (Salem, Ore.) advises consumers on which plants to avoid when they are out shopping at garden centers. The column advises folks who see these plants on sale somewhere, to have a polite conversation with the plant buyer at that store. Savonen, a professor emeritus from Oregon State University, points folks to the GardenSmart Oregon guide to alternatives to invasives, as well as the state’s noxious weeds list for definitive resources concerning invasives.