IPR News Ash Tree Removal=$3,000,000,000+ Iowa Public Radio Published November 29, 2013 at 12:05 AM CST Facebook Twitter LinkedIn Email Listen • 0:54 USFS Region 5 The Emerald Ash Borer threatens millions of ash trees in Iowa. A little green bug could end up costing Iowa billions of dollars in the coming years, as the state comes to terms with an Asian beetle sweeping across the Midwest.