Science | species Midwest Fights Weeds With Bugs Biological control takes a food-chain approach to invasive plants By Nick McMaster Posted Jul 2, 2008 2:20 PM CDT Copied A man walks past last year's growth of Phragmites, also known as "Giant Reed," in this Sunday, May 13, 2007 file photo, at Maumee Bay State Park in Oregon, Ohio. (AP Photo/J.D. Pooley, FILE) Officials in the Midwest are returning to a tried-and-true technique to fight invasive plants, the Chicago Tribune reports. Biological control uses natural enemies to rein in pests, and importing a tiny brown beetle in the 1990s brought under control a fast-spreading European weed, known as loosestrife, that was terrorizing agriculture. There are other enemies now—but scientists worry the approach could create other problems. It's possible the insects will find indigenous plants tasty, too, or will lose their appetite for the target species. "There's always that apprehension: Things are great now, but what will things be like in the future?" says an Illinois ecologist. "Will something we bring in now haunt us down the road?" Read These Next A game of doorbell ditch turns fatal for 11-year-old. Is India, under hefty tariffs, turning away from the US? Guy accused of snatching hat from boy at US Open IDed as rich CEO. At Colorado airport: collision, flames, death. Report an error