The 13-Moon Tree Calendar of Prehistoric Ireland

Discover Your Celtic Birth Tree

In ancient Celtic cosmology, the year was divided into thirteen lunar tree months — each governed by a sacred native tree (feda), an Ogham rune, and a seasonal spirit.
Select your birthday to reveal your sacred tree talisman, Gaelic lore, and corresponding landscape painting.

Your Date of Birth:
Sacred Festivals:
January 21 – February 17

Rowan · Luis

The Visionary & Thinker

Delight of eye · glow of the mountain ash · flame that guards against the unseen.

Element Fire & Earth
Ogham Rune Luis (ᚂ · Right 2)
Sacred Pigment Bog Ochre & Solstice Gilt
Sacred Bird / Totem Greenfinch & Crane

Celtic Tree Personality & Lore

Those born under the Rowan moon are philosophers, visionaries, and protectors. You possess an inner fire and powerful intuition that sees past external pretenses. Like the resilient mountain ash clinging to Irish granite outcrops, you thrive in challenging terrain and bring clarity and inspiration to those around you.

Ogham →
Matching Fine Art Pairing Collection: Speaking Stones
Matching Elaine Leigh Painting

Speaking Stone at Forenaghts

Peat carbon, ferric bog ochre & gold leaf on linen

This piece was painted during the quickening moon of Rowan, capturing the fiery mineral veins within ancient Kildare granite.

View in Gallery Passage

The Complete Beth-Luis-Nion Calendar

The 13 Sacred Irish Trees

Explore the full cycle of the thirteen lunar moons. Click any sacred tree to reveal its ancient Ogham rune, mythology, and fine art pairing.