Oriental Bittersweet Close-Up (IMAGE) University of Massachusetts Amherst Caption Oriental bittersweet was originally introduced for its bright orange berries, but it has become a serious pest in the Northeast. 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.