Wands, protection, leaves for prophetic dreams, prosperity, study, health, enhances magic, made into besoms and stangs. Ash, oak and hawthorn grown or found together form what is called a Fairy Triad, where the fair folk may visit and maybe seen. Sprinkle ash leaves under the pillow to grant insight and prophetic dreams. [1]
The world tree, astral travel, all rites of passage, healing, protection, initiation, autumn equinox, Midsummer, Ostara, and Yule. Sacred to Ares, Athena, Cernunnos, Fates, Furies, Gwydion, Herne, Jupiter, Llyr, Mars, Minerva, Neptune, Norns, Odin, Poseidon, Thor, Uranus, Woden, Wyrd, Ymir, and Zeus. Ruled by the sun, the elements of water and fire, and the star sign Leo. [2]
Resources
[1] Green Witchcraft by Ann Moura
[2] The Hearth Witch’s Compendium by Anna Franklin

