self-watering soil garden (IMAGE) University of Texas at Austin Caption Researchers planted radishes in this miniature greenhouse using their self-watering soil and compared it to sandy soil found in dry regions of the world. Credit University of Texas at Austin 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.