Ragwort Plant (IMAGE) Netherlands Institute of Ecology (NIOO-KNAW) Caption Ragwort plants show to act as phones that insects can even use to store "voicemail messages" in the soil. Credit Olga Kostenko / NIOO-KNAW Usage Restrictions only to be used with appropriate credit 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.