grown greens (IMAGE) Penn State Caption Broccoli microgreens grown in a peat and perlite mix and ready to harvest next to other brassica microgreens. Credit Francesco Di Gioia Usage Restrictions non commercial use only 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.