Planting (IMAGE) University of California - Santa Cruz Caption Researchers grew a selection of 44 wild plant species with no previous history in California in the greenhouse, introduced them into the meadow for three weeks, and then quantified the disease symptoms they developed. Credit Ingrid Parker Usage Restrictions For use only with news coverage of this research. 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.