willow catkin, salix with delicate down in spring

willow salix salicaceae rosids family catkin shrub tree dwarf flowers flower sal species anthers delicate soft single insects collect nectar bank attachment plant propagate may june march honeybee bumblebee sachet pollen allergic allergy wind stun high small yellow white branch background flora botany easter custom babara twig home down spring willow salix salicaceae rosids family catkin shrub tree flowers species anthers delicate soft flower insects collect nectar attachment plant propagate may june march honeybee bumblebee sachet pollen allergic allergy wind stun high small yellow white branch background flora botany easter custom twig