Roots and crowns (IMAGE) American Society of Agronomy Caption Shrub willow can store a significant amount of carbon in the unharvested roots and plant crowns (lower stems) left behind after the harvest. Willow will resprout vigorously from these crowns. Credit Armen Kemanian Usage Restrictions For use with this story only. 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.