Birch is a tree often associated with rebirth and reincarnation. The silver skeletal form of the birch in winter is representative of ghosts in the forest. The birch moon is a time of renewal. The first leaves of the birch herald the coming spring.
Spell: Blessings for the departed.
Birch bark taken from dead limbs can be used to write blessings for your ancestors. These blessings can be thrown into the fire at samhain or yule to thank the ancestors for their protection and wisdom and to draw unto them the blessings for rebirth.
~*Belladonna & Bones*~
Image via wikipedia