In the Wiccan Rede, there is mentioning of nine woods.
Nine woods in the Cauldron go,
Burn them quick and burn them slow.
However, the only wood mentioned after is Elder, which is specified not to be burned. This page contains the extra verses detailing these Nine Woods.
Birch in the fire goes,
To represent what thy Lady knows.
Oak who towers tall with might,
In the fire brings insight.
Rowan is a tree of power,
Letting thy magick flower.
Willows at waterside stand,
To guide us to the Summerland.
Hawthorn is to purify,
Drawing faeries to thine eye.
Hazel is the tree of learning,
Adding strength to fires burning.
Find the flowers of the Apple tree,
Which brings us all fertility.
Grapes grow upon the Vine,
Giving us both joy and wine.
Fir doth mark the evergreen,
To show us immortality seen.