Spinach in greenhouse.2 (IMAGE) Boyce Thompson Institute Caption A cultivated variety of spinach grows in a greenhouse at Shanghai Normal University. Credit Image credit: Xiaofeng Cai. Usage Restrictions Must give proper credit. License Original 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.