Understanding the Celtic Tree Horoscope

The Celtic tree horoscope assigns 21 trees (apple, fir, elm, cypress, poplar, hackberry, pine, willow, linden, oak, olive, hazel, mountain ash, maple, walnut, chestnut, ash, hornbeam, fig, birch, beech) to periods throughout the year—unlike the 12-sign zodiac. Some trees govern two separate periods (e.g., two weeks in December and April); others, a single day (olive: Sept 23, oak).

Ancient Celts viewed trees as sky-pillars, linking human character to tree properties. While historical origins are debated, the tree-character correlations remain compellingly applicable.