Willow Flowers (IMAGE) University of Helsinki Caption Willow flowers provide nectar for a great many insects active early in the spring. The onset of blooming in goat willow (Salix caprea) was one of the phenological events studied across the former Soviet Union. Credit Svetlana Bondarchuk 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.