salix purpurea purple willow or osier is a species of salix native to most of europe. purple willow catkin, salix purpurea

foliage willow salix viminalis background green plant closeup basket common osier shrub nature outdoor growth spring rural botany tree energy agricultural plantation meadow crop stem harvest ecology agriculture plants sunrise environment industry trees farm season seasonal biomass fuel land detail lush bio poland small country ecological sallow cellulose leaves production