This book reintroduces an ancient system of astrology developed by the ancient Druids through a mystical runic alphabet known as the Ogham. They used a Celtic tree calendar, in which each tree has a dryad or tree spirit, which represents the spiritual nature in human beings. Because the tree signs function somewhat like the moon signs in traditional astrology, these signs bring to light many of the details of your inner world: emotions, feelings, spirituality, and the subconscious mind. No prior knowledge of astrology is necessary to use this system; all you need to know is the day and month of birth to greatly enhance the interpretation of your natal chart by adding your tree sign and the new information it conveys. The book includes a comprehensive analysis of each tree sign and each sun sign of the traditional zodiac, with an analysis of each of the tree sign/sun sign combinations, plus an exercise, spell, ritual, or meditation specifically created for each combination.