The tree does not exist to describe you.

The symbol exists to help you approach the tree.

What if your birth tree were not a personality label, but a place to begin?

Under the Celtic Trees is a richly layered guide to the modern Celtic Tree Astrology calendar, the historical Ogham alphabet, inherited oracle meanings, European tree lore, seasonal ritual, and direct relationship with the living world.

This complete 74-page book is offered freely to our patrons and community as an invitation into deeper study, careful divination, and relationship with the living world. It is not a preview or a partial edition. The whole guide is yours.

This is not a list of thirteen trees attached to thirteen sets of dates. It is a complete living correspondence system.

Each month tree belongs to a web of relationships: Ogham, animals, elements, planets, colors, stones, metals, companion plants, tarot, seasonal festivals, habitat, ecological community, magical intentions, ritual practices, and shadow cautions.

The book also moves far beyond the thirteen-month calendar into a full exploration of the twenty primary Ogham feda. You will learn how the alphabet is constructed, how inscriptions were read, what medieval kennings preserved, and how the inherited meanings can be carried into a responsible modern oracle practice.

Historical honesty does not make the tradition less magical.

It gives the magic roots.

Inside the book

Why Tree Astrology?

Begin with the question many guides leave unanswered: What is Celtic Tree Astrology, why did it develop, and why would a person be connected with a tree?

Explore:

• The importance of trees in early Irish life, law, place, livelihood, memory, and story
• The relationship between historical Ogham and later tree lore
• Medieval interpretation and the Bríatharogaim
• Antiquarian, poetic, folkloric, and esoteric reconstruction
• How the modern thirteen-month lunar tree calendar became popular
• What tree astrology can meaningfully offer—and what it cannot determine
• How to use a birth tree as an invitation rather than a fixed identity

The thirteen lunar trees

Journey through:

Birch • Rowan • Ash • Alder • Willow • Hawthorn • Oak • Holly • Hazel • Vine • Ivy • Reed • Elder

Yew is also included as the Nameless Day: the still threshold between the completion of one cycle and the beginning of another.

Every tree receives a complete correspondence system, including:

• Calendar dates
• Ogham name and sound
• Elemental relationship
• Celestial and planetary influences
• Animals and birds
• Colors
• Stones and crystals
• Metal
• Companion plants
• Seasonal and Sabbat placement
• Tarot relationships
• Habitat
• Ecological relationships
• Mythic and folkloric connections
• Magical intentions
• Ritual practice
• Shadow caution

The Ogham deep dive

Learn Ogham as more than a collection of mysterious marks.

The book includes:

• A concise history of Ogham inscriptions
• The difference between inscriptional, manuscript, and modern spiritual layers
• How the four aicmí organize the alphabet
• How stroke number and position create each letter
• A visual chart of all twenty primary feda
• A pronunciation guide for Ogham, the four aicmí, specialist terms, and all twenty feda
• Reading direction and the importance of the stone’s edge
• Letter names, sounds, plant traditions, and areas of historical uncertainty
• The medieval word-kennings or Bríatharogaim
• Why Ogham is not simply a perfect one-to-one “tree alphabet”
• The later supplementary signs known as the forfeda
• Writing and transliteration practice
• Respectful material and cultural guidance

The complete twenty-fid Ogham oracle

The inherited meanings matter.

Humans preserved these letters through writing, poetry, memory, classification, useful plants, landscape, craft, and interpretation. Although no single complete ancient casting manual survives, the historical letter names, medieval kennings, cultural relationships, and later oracle traditions give us a meaningful inheritance from which to read.

Every one of the twenty primary feda includes:

• Historical and linguistic anchor
• Medieval kenning field
• Inherited tree, craft, landscape, or cultural relationship
• Full oracle interpretation
• Divinatory gift
• Warning or shadow expression
• Question for the reading
• Practical counsel

The oracle method follows seven steps:

Identify → Anchor → Inherit → Encounter → Challenge → Act → Return

This is divination as a disciplined conversation with inherited symbols—not an escape from judgment, evidence, or personal responsibility.

Ritual, divination, and field practice

You will also receive:

• Three original Ogham spreads
• The Edge of the Stone spread
• The Root, Trunk, Crown & Forest spread
• The Lore and Living Tree spread
• A monthly correspondence record
• An Ogham field practice
• A twenty-letter study cycle
• Writing and inscription exercises
• Reflection and manifestation tracking
• Source-led research prompts
• Reciprocity and stewardship practices

A tradition with roots—and a practice that remains alive

This book distinguishes among:

• Historical inscriptions and language
• Medieval manuscript interpretation
• Documented folklore
• Later tree-calendar and esoteric traditions
• Dark Moon and Moth Studios’ modern contemplative synthesis

The purpose is not to drain the tradition of meaning. It is to let every layer speak honestly.

You are invited to learn what humans before us understood through these symbols, practice with the oracle meanings they helped establish, and then return to the living tree—where direct observation can deepen, complicate, and transform the inherited story.

This book is for you if...

• You want to explore Celtic Tree Astrology beyond simplified birth-tree personality lists
• You are curious about Ogham as both a historical writing system and a living oracle tradition
• You want all thirteen lunar trees gathered into one complete correspondence system
• You practice divination, seasonal spirituality, tarot, ritual, or nature-based reflection
• You value folklore and inherited symbolism without wanting modern reconstruction presented as unquestioned ancient fact
• You believe historical understanding and spiritual wonder can strengthen one another
• You want your mystical practice to lead toward observation, relationship, and responsibility
• You are ready to study the trees as living organisms—not only as metaphors

Format

• 74-page digital PDF
• US Letter size: 8.5 × 11 inches
• Designed for printing or tablet reading
• Full-color cover with parchment-inspired interior
• Visual Ogham alphabet and correspondence tables
• Reflection, ritual, field-practice, and tracking pages
• Instant digital download
• Complete free patron and community gift
• No physical item will be shipped

Important note

The system commonly called Celtic Tree Astrology is a modern interpretive framework inspired by historical Ogham, Irish and Celtic tree lore, seasonal customs, European folklore, medieval scholarship, poetry, and later esoteric writing. It should not be treated as one verified astrological calendar used uniformly by ancient Celtic peoples.

The book is intended for education, reflection, observation, and spiritual practice. It does not provide medical, mental-health, legal, financial, botanical-identification, survival, or emergency advice.

A note from Dark Moon and Moth Studios

A tree can be a symbol.

But before it is a symbol, it is alive.

It grows toward light. It responds to water, temperature, soil, damage, fungi, animals, weather, and time. It shelters lives we may never see. It carries histories that do not begin or end with us.

Let the symbol introduce you.

Let the inherited oracle teach you.

Then let the living tree change what you thought you knew.

The moth follows the moon.

The tree follows the light.

We follow by learning to see.