What Is the Celtic Tree Calendar?

The Celtic Tree Calendar is an ancient lunar system built around 13 tree-governed cycles, each rooted in Celtic mythology and tied to the Ogham alphabet. Also known as the Druid's Calendar, it maps the year through the energy of sacred trees rather than months on a modern grid. Each tree carries its own voice — a distinct pulse of meaning, magick, and insight waiting beneath the bark.

While not an ancient record in the strictest sense, the Celtic Tree Calendar is a living celebration of nature's wisdom, drawn from Celtic Ogham tradition and still practiced today. It offers a way to attune yourself to the specific energies each tree holds throughout the year — a kind of tree horoscope, written in root and branch rather than star and sign. Come closer, and let the trees speak.

What Sacred Trees Are Included in the Celtic Tree Calendar?

The sacred trees of this calendar reach beyond a single month. Their roots run deep through Celtic mythology and Druid tradition, each one holding its own place in the Ogham alphabet and its own gift to offer:

•  Tree Magick — Draw on the unique power held within each tree
• Tree Faeries — Meet the mystical beings said to dwell among the branches
• Correspondences — Learn how each tree connects to the elements, planets, and beyond
• Spells — Cast workings aligned with each tree's own current of energy

Which Trees Are Featured in the Celtic Tree Calendar?

Fifteen trees form the heart of this Druid tree calendar, each one tied to its own Celtic tree month and Celtic tree sign:

Alder, Apple, Ash, Birch, Elder, Hawthorn, Hazel, Holly, Ivy, Oak, Reed, Rowan, Vine, Willow, and Yew.

Some practitioners also trace the Celtic Druid Vine and the broader Tree of Life through this same lineage — an unbroken thread connecting root to canopy, past to present.

What's Included in This Guide?

• 15-page PDF
• Pages sized at 300 DPI, 8.5" x 11"

Print your pages, and let the trees find their place on your altar or in your grimoire.

Frequently Asked Questions

Q: What's the difference between the Celtic Tree Calendar and the Ogham alphabet?
A: The Ogham alphabet is the ancient script used to inscribe the names of sacred trees, while the Celtic Tree Calendar organizes those same trees into a 13-month lunar cycle. The two are deeply intertwined — one gives the trees their symbols, the other gives them their season.

Q: How is a Celtic tree sign different from a zodiac sign?
A: A Celtic tree sign is determined by the tree governing your birth date within the 13-month cycle, rather than by constellations. It functions much like a tree horoscope, revealing personality traits and energies tied to your governing tree.

Q: Can I use the Celtic Tree Calendar for divination and spellwork?
A: Yes. Each tree's correspondences — its elements, planetary ties, and traditional uses — can be drawn on for divination, spellwork, and seasonal ritual throughout the year.