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

willow spring sunrise energy plants plantation stem detail outdoor salix viminalis nature production cellulose biofuel conservation biomass country farmland alternative bio land lush row shrub small rural trunk sallow fuel leaves background farm agriculture trees industry environment growth cultivate season harvest crop meadow agricultural seasonal ecological green landscape osier handcraft