Celtic Astrology

Celtic astrology maps birth dates onto a 13-month lunar calendar in which each month corresponds to a tree from the Ogham alphabet — the ancient Irish writing system whose letters were named for trees and plants. Each tree sign carries a set of associated qualities drawn from Celtic mythology, seasonal symbolism, and the natural properties of the tree itself. The system is less rigorously ancient than BaZi or Vedic astrology — its modern form was substantially shaped by 20th-century writers — but its symbolic vocabulary is genuinely rooted in pre-Christian Celtic tradition.

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Reference

Complete reference

The 13 Celtic Tree Signs

The Ogham tree calendar — thirteen lunar months, each governed by a sacred tree whose ecology and mythology become a lens for birth sign and seasonal energy.

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  • celtic astrology

The Celtic Tree Calendar: A Complete Guide to the 13 Tree Signs

Discover your Celtic tree sign. A complete guide to the 13-tree Ogham calendar — origins, how it works, and what each birth sign reveals about you.
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  • ogham divination meanings

Celtic Ogham: The Tree Alphabet and Its Divination Uses

Ogham is the earliest writing system of the British Isles — a series of notches and lines carved into stone and wood, each letter named for a tree. Here's the complete Ogham alphabet, the mythology behind each letter, and how the system has been used for divination from medieval manuscripts to contemporary practice.