In the Celtic Tree Zodiac, Alder is the wise spirit for March 18 - April 14. This is a time of rebirth, sunrise, initiation—and indeed, resurrection. Alder is the tree which fairies love. These nature spirits appreciate the beautiful and subtle; the play and celebration of life coming back from the soil. There is also the flowering, the vitality of new energy, the dancing and flowing of water, the emotions and exuberance of life.