Thoughts of the Green Man's return in the Spring hinge on the peep of snowdrops through the snow, the crocus that bloom in the winter's sun and the lilt of birdsong that grows greater with each warming day.
I ran across this lovely folksong about the Green Man waking in the Spring by Lauren Raine at: http://www.rainewalker.com/thegreenman.htm
and a favorite song about the Green Man by Martin Donnelly on youtube.com: