first signs of spring. hazel, european filbert corylus avellana opened flower buds and catkins on the eve of spring

hazel corylus plant tree spring flowering deciduous betulaceae pollen nature bloom blossom catkin allergy season flower shrub beauty park forest growing flora inflorescence seasonal pollination blooming hazelnut yellow garden branch outdoor closeup twig catkins macro sunlight natural health springtime background young botanical beautiful earring growth dust allergic earrings anther allergenic first signs spring european filbert avellana opened buds eve