The Celts assigned a certain mystery to these trees as they are are characteristically unusual in size (very large) and beautiful (with a commanding presence). There are also those they believe to be “sacred” such as the Ash, Yew, Oak, and the Willow. Each tree has special and spiritual properties that you should consider according to what you are trying to build or make.
They believed that certain trees held special properties more than just a source of fuel for heat and cooking. The Tree of Life symbolism is one that is valued across all religions even though each has a slightly different take on just what the Tree of Life means. If you think about it, trees have always had their place in the folklore and mythology of each culture.
