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Celtic Tree Calendar · Month 12 of 13

Reed, the month of the letter nGéadal

Reed is the twelfth of Graves' tree months, 28 October to 24 November, led by the Ogham letter nGéadal, NG. The reed is O'Flaherty's and Graves' reading: the medieval tracts gloss the letter as broom or fern, and the name itself probably means slaying.

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The Ogham letter nGéadal drawn upright on a stemline, three strokes across the stemline at a slant, read from the bottom up; beside it the words nGéadal, the Reed month, letter NG, and the dates 28 October to 24 November. nGéadal The Reed month · letter NG 28 Oct to 24 Nov Old Irish gétal A contested gloss Read from the bottom up
nGéadal, the letter NG, as it is cut on the stones: three strokes across the stemline at a slant, read upwards. Drawn by us from its Unicode code point, not from a font.

Facts

Tree month
28 October to 24 November (Graves, 1948)
Days
28
Ogham letter
nGéadal, the letter NG (U+168D, OGHAM LETTER NGEADAL)
Old Irish name
gétal; Graves spells it Ngetal
The name means
probably slaying; the medieval tract glosses the letter broom or fern
Letter and tree
Contested: the medieval tract glosses the letter differently
Kenning (Morann)
lúth lega, "a physician's strength" (tr. Calder 1917, p. 281)
Medieval tree gloss
broom or fern (gilcach), not reed (Auraicept, Calder 1917, p. 93)
The tree in Modern Irish
giolcach

Meaning

Reed is the most debated month of the calendar. The kenning of its letter is "a physician's strength", in Calder's translation, and the Auraicept explains it with a different plant: "A physician's strength is broom". The kenning may point to a plant used in healing; the tract does not say more.

Our reading takes searching perception from this: people born in this month are read as drawn to what lies under the surface and to finding things out. The reading is ours.

The letter

nGéadal is the third letter of the third group: three strokes across the stemline at a slant. In Modern Irish the name is written with a small n and a capital G; the Old Irish form is gétal, which probably means slaying, and Graves spells it Ngetal. Its sound in the earliest inscriptions is still debated.

Where the reed came from

The medieval tracts do not give this letter the reed. The Auraicept glosses it gilcach, which Calder translates "broom or fern", and the Ogam Tract glosses it broom. The reed comes from Roderick O'Flaherty, who in 1685 glossed the letter "Gilcach, vel Raid" with the Latin words for reed and cane, and Graves followed him. In Modern Irish giolcach is the word for reed, and broom is giolcach shléibhe, "mountain giolcach". The claim that reeds were revered and used for writing tools has no source at all.

In Graves' year

Reed runs from 28 October to 24 November, the same in every list of the tree months. The planet, gemstone, animal and personality title that tree-sign websites give it are modern, after Paterson (1992) and later lists, and are not used here.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

The Auraicept's explanation
"A physician's strength is broom" (Calder 1917, p. 93) sourced
The Ogam Tract's gloss
broom. 'Reed' is not in the medieval tracts: it comes from O'Flaherty's 1685 list (S2), which Graves followed (C106) (Calder 1917, p. 277) sourced
O'Flaherty's gloss (1685)
Ngetal, commonly Gilcach or Redd, the reed sourced
How the letter is tied to the tree
Contested: the medieval tract glosses the letter differently disputed
Colour and bird words for the letter (a medieval curiosity)
Colour: nglas, "green"; bird: ngéigh, "goose". Words that begin with the letter, like the tract's lists of churches; not the tree's colour or animal sourced
Our reading
The most debated month: drawn to what lies under the surface and to finding things out. our construction

How the schools read it

The medieval tracts
The kenning "a physician's strength"; the Auraicept glosses the letter broom or fern (gilcach).
O'Flaherty, 1685
Ngetal, commonly Gilcach or Redd, the reed.
Graves, 1948
The twelfth month, 28 October to 24 November.
Ogham scholarship
gétal probably means slaying; the reed is not the tracts' gloss.
Tree-sign websites
The same dates; a planet, gemstone, animal and personality title, all modern. Not used here.
EsoTerrier
The most debated month: drawn to what lies under the surface and to finding things out.

Claims about it

  • The reed is the tree of the letter nGéadal.

    disputed

    What the record shows: The Auraicept glosses the letter as broom or fern and the Ogam Tract as broom; the name itself probably means slaying. The reed comes from O'Flaherty's list of 1685, which Graves followed.

  • The reed was revered for its roots and used to make writing tools.

    unverified

    What the record shows: No source found. Nothing in the medieval tracts or in Graves' sources says so. Not used.

  • The Reed month belongs to an old Celtic calendar that the Druids kept.

    false

    What the record shows: No ancient or medieval source has a tree calendar or a tree for each birthday. The thirteen months are Robert Graves', set out in 1948.

  • The Reed month has a traditional planet, element, gemstone and animal.

    false

    What the record shows: Modern additions: the planets are Helena Paterson's (1992), the rest come from later web lists that disagree with one another. None is medieval or in Graves as a set.

Elsewhere on EsoTerrier

Sources

Primary texts (4)
  1. George Calder (ed. and tr.), Auraicept na n-Éces: The Scholars' Primer, with In Lebor Ogaim (the Ogam Tract). Edinburgh: John Grant, 1917. Quoted with page. archive.org/details/auraicept00calduoft
  2. Roderick O'Flaherty, Ogygia. London, 1685; English by James Hely, Dublin, 1793. archive.org/details/ogygiaorachrono00helygoog
  3. Robert Graves, The White Goddess. London: Faber and Faber, 1948 (revised 1952 and 1961). Facts only; not quoted.
  4. The Unicode Standard, Ogham block U+1680 to U+169F (encoded in Unicode 3.0, 1999). unicode.org/charts/PDF/U1680.pdf
Studies and other sources (7)
  1. Damian McManus, "Irish letter-names and their kennings", Ériu 39 (1988), pp. 127 to 168. jstor.org/stable/30024135
  2. Deborah Hayden and David Stifter, "Ogam and Trees", OG(H)AM project, 20 December 2022. ogham.glasgow.ac.uk/index.php/2022/12/20/ogam-and-trees
  3. "Ogham", Wikipedia (orientation only). en.wikipedia.org/wiki/Ogham
  4. Mary Jones, "Celtic Tree Calendar", Jones's Celtic Encyclopedia (2004). maryjones.us/jce/celtictreecalendar.html
  5. Helena Paterson, The Celtic Lunar Zodiac. London: Rider, 1992 (known from catalogue records and Penczak). search.worldcat.org/oclc/31606966
  6. whats-your-sign.com, "Celtic Tree Astrology", Wayback Machine capture of 28 February 2008 (cited only as the source of the claim). web.archive.org/web/20080228140902/http://www.whats-your-sign.com/celtic-tree-astrology.html
  7. Foras na Gaeilge, focloir.ie and teanglann.ie (Modern Irish forms). focloir.ie
Our own research (2)
  1. EsoTerrier, Celtic Tree research and validation, 11 to 13 October 2026.
  2. EsoTerrier calculation engine, the Celtic Tree Calendar service, its texts and its documentation.

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