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Celtic Tree Calendar

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The Celtic Tree Calendar


There is much debate about the historical validity of the Celtic Tree Calendar. It is now generally accepted that the current version was devised by the nineteenth century antiquarian Edward Davies from the 16th century history of Ireland called ‘Ogygia’ by Ruairí Ó Flaitheartaigh. Davies was a friend of Iolo Morganwg and closely involved with him in the “Druid Revival” of the late 18th and early 19th centuries. The calendar was further developed by Robert Graves in “The White Goddess” by adding dates to the thirteen (lunar) months and related Ogham and trees devised by Davies.

Whether the ancient Celts and Druids used this or another version (or any version at all) is open to debate. The following list gives the Ogham, the Tree name and the date.

Beth – Birch - December 24 to January 20

Luis – Rowan - January 21 to February 17

Nion – Ash - February 18 to March 17

Fearn – Alder - March 18 to April 14

Saille – Willow - April 15 to May 12

Uath – Hawthorn - May 13 to June 9

Duir – Oak - June 10 to July 7

Tinne – Holly - July 8 to August 4

Coll – Hazel - August 5 to September 1

Muin – Vine - September 2 to September 29

Gort - Ivy - September 30 to October 27

Ngetal – Reed - October 28 to November 24

Ruis – Elder - November 25 to December 22


Mistletoe - December 23 (although it is also considered that this day is not ruled by any tree as it is the traditional day of the proverbial "Year and a Day" in the earliest courts of law).


Other tree and plant associations are:

Gorse - Spring Equinox - March 20

Heather - Summer Solstice - June 20

Popular - Autumn Equinox – September 22

Yew - the day before the Winter Solstice - December 21

Fir - Winter Solstice - December 22

Last Updated on Friday, 27 January 2012 14:01  



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