Strangling a Hedgerow (IMAGE) University of Massachusetts Amherst Caption Proactive screening of invasion risk before new plants are introduced could prevent problems like Oriental bittersweet, pictured here dominating a hedgerow. Bittersweet vines were introduced as an ornamental for their attractive berries, but have expanded throughout New England, choking and shading native forest plants. Credit Photo courtesy of UMass Amherst Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.