Ogham Alphabet Divination

Along roadsides and in museum cases across Ireland and western Britain, standing stones bear marks that look like tally sticks: groups of strokes cut across or along a central ridge or edge. Some of these stones have been standing in the same fields since the 5th century CE. The marks are Ogham script, one of the earliest written forms of the Irish language, and though their original purpose was primarily to mark territorial boundaries and commemorate the dead, the alphabet's twenty characters have become the basis for a living divination practice within contemporary Celtic spirituality.

Understanding Ogham as a divination system requires understanding what it actually is (a genuine early medieval alphabet with documented tree associations), what has been added by later interpreters (particularly Robert Graves in the 20th century), and what contemporary practice has developed from both layers. The distinction matters for practitioners who want to root their practice in the strongest available material, historical and living both.

Ogham: Historical Origins and Inscriptions

The Ogham alphabet consists of twenty primary characters (feda, literally "letters" or "trees") arranged in four groups (aicme) of five, plus five additional characters (the forfeda) added later for sounds not covered by the original twenty. Each character is formed by strokes cut across or alongside a central stem line: one to five strokes below the line, one to five strokes above the line, one to five strokes through the line, or one to five diagonal strokes, producing twenty distinct combinations.

Surviving Ogham inscriptions, approximately 400 in total, are found primarily on standing stones in Ireland (particularly County Kerry, County Cork, and Waterford), Wales, Scotland, and the Isle of Man, with a few in England. Dating is imprecise but most inscriptions are placed between the 4th and 7th centuries CE. The inscriptions are generally short: personal names in the genitive case ("of X son of Y"), presumably marking territorial claims or graves.

The alphabet's origin is debated. Most scholars accept that it was devised to represent early Irish using Latin alphabetic principles, probably in the 4th century CE among Irish-speaking Christians influenced by Latin literacy. Some have proposed connections to the Roman alphabet, others to the Greek or Hebrew. A minority view, associated with Irish mythological tradition rather than academic scholarship, proposes that Ogham was a pre-Christian druidic invention. The medieval Irish manuscripts themselves attribute its invention to the god Ogma (or Ogmios in Gaul), the divine craftsman of language, which reflects mythological rather than historical attribution.

The primary scholarly sources for Ogham are the medieval Irish manuscripts that include ogham tract material, particularly the Auraicept na n-Eces (Scholar's Primer), preserved in multiple manuscripts with the earliest versions dating to the 7th century CE but referring to older material. The Book of Ballymote (c.1390 CE) contains particularly detailed Ogham material including the kenning lists (word-lists) associating each Ogham character with a tree, a bird, a colour, and other categories.

The Tree Associations in Manuscript Tradition

The association between Ogham characters and trees is documented in the medieval Irish manuscript tradition, specifically in the word-ogham (or Bríatharogam) kenning system. The Briatharogam consists of three sets of kennings (poetic epithets) for each Ogham character. One of the most important and consistently referenced kennings is the tree or plant name that gives each character its primary identity in the manuscript tradition.

The Auraicept na n-Eces provides the earliest systematic presentation of these associations, though the specific tree list shows some variation across manuscript versions. The Book of Ballymote's version is the most commonly cited in contemporary Druidry and Ogham divination. These tree associations were used by medieval Irish scholars as part of a sophisticated kenning tradition used both poetically and for encoding secret messages (for which Ogham was well suited, being readable as tally-marks or knot patterns).

Whether these tree associations connect to an older pre-Christian druidic tradition or were developed by Christian Irish scholars as a scholarly game is debated. The medieval manuscripts were produced by Christian monks, and some scholars argue that the elaborate Ogham lore represents Christian Irish learning rather than preserved druidic knowledge. Others point to the depth and internal consistency of the tree kenning tradition as evidence of older roots. The debate is genuinely unresolved, and honest contemporary practitioners acknowledge this rather than claiming unbroken druidic lineage.

The Twenty Primary Feda

The twenty primary Ogham feda and their tree associations, drawing primarily on the Book of Ballymote tradition, with brief divinatory meanings as developed in contemporary practice:

Beith (B) - Birch: New beginnings, purification, fresh starts, resilience. The birch is the first tree to colonise cleared ground, appearing after fire or storm. Divinatory meaning: something new is beginning or is ready to begin.

Luis (L) - Rowan: Protection, vision, warding against harmful influence. The rowan's red berries were widely used in British and Irish folk magic for protection. Divinatory meaning: protection is available or needed; trust your intuition.

Fearn (F) - Alder: Foundation, endurance in challenging conditions, bridging of worlds. Alder wood is resistant to water and was used for posts driven into wet ground. Divinatory meaning: build on solid foundations; navigate between different realities or demands.

Sail (S) - Willow: Intuition, the flow of feeling and emotion, the unconscious, lunar cycles. The willow's relationship with water and its flexible yielding nature associate it with emotional intelligence. Divinatory meaning: trust your intuitive knowing; allow rather than force.

Nion (N) - Ash: The world tree, connection between realms, far-reaching perspective, the cosmic axis. Yggdrasil, the Norse world tree, was an ash. Divinatory meaning: see the larger picture; connections between apparently separate things.

Huath (H) - Hawthorn: Cleansing, obstacles, waiting, the boundary between worlds. The hawthorn's thorns and its association with the Otherworld entry points make it a complex, sometimes difficult sign. Divinatory meaning: patience; clearing is happening; examine what needs releasing before proceeding.

Dair (D) - Oak: Strength, endurance, sovereignty, deep-rooted wisdom. The oak was the pre-eminent sacred tree for Celtic peoples. Divinatory meaning: you have or need the strength to endure; seek or embody grounded authority.

Tinne (T) - Holly: Balance, challenge, spiritual combat, the counterpart of the oak (the Holly King and Oak King mythology). Divinatory meaning: face the challenge; balance is needed; look at the darker half of what appears light.

Coll (C) - Hazel: Wisdom, divination itself, hidden knowledge, the salmon of wisdom. The hazel's nuts were associated in Irish mythology with the salmon who ate them and gained all knowledge. Divinatory meaning: wisdom is available to you; trust your discernment.

Quert (Q) - Apple: Beauty, love, the Otherworld, healing, the island of the blessed (Avalon). The apple appears in Irish mythology as the fruit of the Otherworld, offering immortality and divine nourishment. Divinatory meaning: beauty and love are present or needed; healing is available.

Muin (M) - Vine or Blackberry: Inner truth, prophecy, what comes from within, introspection. Divinatory meaning: look within; what is your authentic knowing about this situation?

Gort (G) - Ivy: Growth, persistence, finding one's way through difficulty, determined progress. Ivy grows through obstacles and darkness toward light. Divinatory meaning: keep going; progress is being made even when not visible.

Ngetal (Ng) - Reed: Healing, directness, cutting through confusion to the heart of the matter. Reed was used for writing and for healing tools. Divinatory meaning: get to the point; healing is available; take direct action.

Straif (Z/St) - Blackthorn: Difficulty, strife, forced change, the necessity of pruning. The blackthorn's fierce thorns and its use in walking sticks (shillelagh) associate it with confrontation with difficulty. Divinatory meaning: this is genuinely hard; necessary change is happening even if painful.

Ruis (R) - Elder: Endings, death and rebirth, the cycle completing, ancestral wisdom. The elder has long associations with death and the threshold in British and Irish traditions. Divinatory meaning: something is ending; what comes after is already present in seed.

Ailm (A) - Pine or Fir: Long view, clarity of vision from higher ground, the overview. The tall conifers see far. Divinatory meaning: take a longer view; what appears problematic is part of a larger pattern.

Onn (O) - Gorse: Optimism, opportunity in difficult circumstances, cheerful persistence. Gorse blooms yellow even in winter and on poor ground. Divinatory meaning: there is more opportunity here than is visible; an optimistic approach serves you.

Ur (U) - Heather: Romance, passion, matters of the heart, luck, the highlands. Heather's purple bloom covers Scottish moors and has long been associated with luck and love. Divinatory meaning: follow the heart; luck is present in love matters.

Edad (E) - Aspen: Endurance through trial, communication across thresholds, the capacity to withstand what others cannot. Aspen leaves tremble constantly (associated with communication between worlds). Divinatory meaning: you can endure this; communication across difference is needed.

Idad (I) - Yew: Death and rebirth, eternity, connection to ancestors, the long continuity beyond individual life. The yew is the longest-lived tree in Europe, with some specimens over 4,000 years old. Divinatory meaning: something is complete; the ancestors are present; eternity touches this moment.

Trees in Celtic Spirituality

Classical accounts of Celtic religion consistently note the centrality of trees and groves. Pliny the Elder in Natural History (77 CE) describes the druidic ceremony of cutting mistletoe from oak with a golden sickle on the sixth day of the moon, catching it in a white cloak, and using it to prepare a sacred drink. Strabo records that the Galatians of central Anatolia held their public assemblies at a sacred grove called Drunemeton (oak sanctuary). Lucan's Pharsalia (1st century CE) describes a Gallic sacred grove near Massilia (Marseille) as a place of such fearful power that even the Roman soldiers felling it for Caesar's siege works were terrified.

In Irish mythology, the five sacred trees of Ireland (Bile Tortan, Craeb Daithi, Bile Uisnig, Eo Rosa, Eo Mugna) were enormous trees of mythological significance, each associated with a province or kingship centre. Their felling was considered a major catastrophe: the annals record the cutting of these trees as events comparable in seriousness to battles and royal deaths.

The Irish word for a sacred assembly place or territory was nemed (cognate with the Gaulish nemeton, sacred grove), and while nemed later came to mean any privileged or sacred space, its original meaning pointed specifically to the grove as the site of sanctity. The druids performed their most important rituals in groves, and their knowledge was transmitted through the oral tradition of nature: the meanings encoded in tree, bird, river, and weather.

Robert Graves and the Tree Calendar Controversy

Robert Graves's The White Goddess: A Historical Grammar of Poetic Myth (1948) is one of the most influential and most academically contested books in 20th-century religious history. Graves proposed that the Ogham consonants (thirteen of them, not twenty) corresponded to thirteen lunar months of a pan-European "tree calendar" practised by pre-patriarchal goddess-worshipping cultures. His calendar (January: birch; February: rowan; March: ash; etc.) provided a framework for understanding seasonal ritual that proved enormously attractive to the emerging Wiccan and neo-pagan movements.

Celtic scholars have consistently criticised Graves's calendar as an invention with no authentic ancient basis. Proinsias Mac Cana, Miranda Green, and other leading Celticists have found no evidence in the ancient Irish, Welsh, or Gaulish sources for a thirteen-month tree calendar, and the specific month-tree correspondences Graves proposed do not appear in the manuscript tradition. The medieval Irish Ogham kenning lists exist; the calendar Graves built from them does not.

This historical criticism does not necessarily invalidate the calendar as a contemporary spiritual tool. Many contemporary practitioners use the Graves tree calendar effectively as a framework for seasonal attentiveness to specific trees, regardless of its historical credentials. The distinction that matters is between presenting it as an ancient authentic Celtic tradition (which it is not) and using it as a modern framework of one's own construction (which is entirely legitimate).

Ogham Divination Practice

Contemporary Ogham divination draws on the tree kenning tradition of the medieval manuscripts, filtered through the interpretive work of modern practitioners including Colin Murray (whose Celtic Tree Oracle, 1988, was one of the first widely available Ogham divination sets), Liz and Colin Murray, Erynn Rowan Laurie (whose Ogam: Weaving Word Wisdom, 2007, provides a scholarly and practical framework), and many others.

The foundation of meaningful Ogham divination is knowledge of and relationship with the actual trees. Reading about birch is useful; spending time with birch trees, knowing their bark, their seeds, the particular light that filters through birch leaves in April, the way birch colonises disturbed ground, is the experiential foundation from which the divinatory meaning genuinely flows. The Ogham tradition asks practitioners to be naturalists as well as spiritual seekers.

Creating Your Own Staves

Creating Ogham staves from actual tree wood is one of the most valuable practices for developing genuine relationship with the Ogham system. The process:

Identify the twenty trees or their nearest local equivalents in your area. Some trees (ash, oak, birch, hazel, holly) are widely distributed in temperate climates. Others (vine, aspen, blackthorn) may require more searching. For trees not native to your area, choose the closest local equivalent or source a small piece of wood from a specialty supplier.

Gather small fallen branches, about the diameter of a thumb and length of a hand, from each tree species if possible. Approach each tree with genuine respect: introduce yourself, explain what you are seeking, and ask permission. Take only fallen wood, never cut living branches without genuine need. This process itself is a deepening practice of tree relationship.

Allow the wood to dry for several weeks before working it. Smooth each piece with sandpaper or a knife. Carve or burn the appropriate Ogham inscription (one to five strokes across a central line, following the standard Ogham stroke pattern for each character). A reference chart of all twenty characters is widely available in Ogham divination books and online. Apply beeswax or linseed oil to protect and preserve each stave. Store in a natural fabric pouch, ideally made from linen or wool.

Frequently Asked Questions