Ash Tree - Druids wands were made of ash twigs. It also has healing properties. Weak-limbed children were passed through split ash trees which were then bound up. If the tree grew straight, the child would as well.
Ash, Ogham name Nion, rules 18th February to 17th March. The cosmic tree, Yggdrasil was the Ash which links the world of men with the realms of spirit and myth, and imparted understanding of the interconnection of all things. Two springs flow from its roots, the sources of Wisdom and of Fate.