Trees were highly regarded by the ancient celts.
Each tree was believed to have it`s own spirit.
The Oak was considered the most important among the trees.
During the time of the Druids the dead were often buried in the hollowed out trunk of an Oak tree.
The Oak was also used for Solstive festivals and Beltane festivals.
Elder, Rowan, Birch and Hazel were also important in Celtic beliefs.
Hazelnuts were considered a source of creativity and fertility.