Ogham ---- Og"ham (?), n. [Ir.]
A particular kind of writing practiced by the ancient Irish,
and found in inscriptions on stones, metals, etc.
[Written also ogam.]

Ogham is a 25-letter alphabet supposedly inspired by
Ogma, the Celtic god of eloquence.

Letter	English	Irish	Welsh	Summary
B	birch	beith	bedwen	A lovely pale, fine-grained wood. Long associated with fertility and healing magic, birch twigs were used to bestow fertility on cattle and newlyweds, and children's cradles were made from its wood. Birch is one of the first trees to grow on bare soil and thus it births the entire forest. Criminals were at one time birched to drive out evil influences on them, to renew them for the new year. Birch was associated with Thor, probably in recognition of his role as an agricultural and fertility deity. Birch is an incredibly useful tree - nearly every part of it is edible, and it's sap was an important source of sugar to Native Americans and early settlers. The inner bark provides a pain reliever and the leaves are used to treat arthritis. It's bark was used for everything from paper to canoe hulls, and axe handles were also made from Birch. Birch is most useful for fertility and healing spells.
L	rowan	luis	cerdinen	The Rowan tree (also called Mountain Ash) is long known for aid and protection against enchantment. Sticks of the Rowan were used to carve Runes on. It was also used in the art of metal divining. Rowan spays and crosses were placed over cattle in pens and over homes for protection. Its lovely red berries feed the birds in winter. The berries have a tiny pentagram on them. The pentagram is the ancient symbol of protection. The Rowan tree indicates protection and control of the senses from enchantment and beguiling.
F	alder	fearn	gwernen	This tree is a water lover. The oily water resistant wood has been used extensively for underwater foundations and pilings in Venice and elsewhere. It is used in dairy vessels and the branches in making whistles. It is associated with Bran, as He used His body as a bridge to span dangerous waters. It is used in the construction of bridges. Bran's Head was oracular. Alder indicates protection and oracular powers.
S	willow	saille	helygen	The willow is another water loving tree. Willow bark contains Salicin which is used in the treatment of rheumatic fever and various damp diseases. Her catkins, which appear in early spring before her leaves, attract bees to start the cycle of pollination. In western tradition it is a symbol of mourning and unlucky love. The Latin name for the weeping willow refers to the psalm in which the Hebrews mourn their captivity in Babylon by the willows. Willow indicates cycles, rhythms and the ebb and flux.
N	ash	nuin	onnen	A strong, straight-grained wood; sometimes has 'olive' streaks or stripes in the grain. The European variety (fraxinus excelcior) was referred to in the Eddas as the species of Yggdrasil - the 'World-Tree". The first man, named Ask, was created from an ash log. Ash was commonly used to make spears because of its 'springiness' and straight grain. In North America, strips of black ash were split along the grain to make splints for baskets and hoops. It is used in weaver's beams. Women would weave cloth and intermingling threads together in a tight pattern as the microcosm and the macrocosm are united. Ash can be used in spells requiring focus and strength of purpose, and indicates the linking of the inner and outer worlds.
H	hawthorne	huathe	draenen even	A light, hard, apple-like wood. Hawthorn usually doesn't grow much bigger than a shrub, and is popular in England as a hedge plant. The wood from the Hawthorn provides the hottest fire known. Its leaves and blossoms are used to create a tea to aid with anxiety, appetite loss and poor circulation. The Greeks and Romans saw the hawthorn as symbolic of hope and marriage, but in medieval Europe it was associated with witchcraft and considered to be unlucky. This seeming contradiction is to be expected from a tree with such beautiful blossoms and such deadly-looking thorns. Hawthorn can be used for protection, love and marriage spells.
D	oak	duir	derwen, dar	Oak has been considered sacred by just about every culture that has encountered the tree, but it was held in particular esteem by the Norse and Celts because of its size, longevity, and nutritious acorns. The oak is frequently associated with Gods of thunder and lightening such as Zeus, Thor, and the Lithuanian God Perkunas. This association may be due to the oak's habit of being hit by lightening during storms. Specific oak trees have also been associated with the 'Wild Hunt', which is led by Herne in England and by Wodin in Germany. In general, oak can be used in spells for protection, strength, success and stability; the different varieties will lend their own special 'flavour' to the magic.
T	holly	tinne	celynnen	A beautiful white wood with an almost invisible grain; looks very much like ivory. Holly is associated with the death and rebirth symbolism of winter in both Pagan and Christian lore. In Arthurian legend, Gawain (representing the Oak King of summer) fought the Green Knight, who was armed with a holly club to represent winter. It is one of the three timbers used in the construction of chariot wheel shafts. It was used in spear shafts also. The qualities of a spear shaft are balance and directness, as the spear must be hefted to be thrown the holly indicates directed balance and vigour to fight if the cause is just. Holly may be used in spells having to do with sleep or rest, and to ease the passage of death.
C	hazel	coll	collen	Hazel is another food tree. In Celtic tradition, the Salmon of Knowledge is said to eat the 9 nuts of poetic wisdom dropped into its sacred pool from the hazel tree growing beside it. Each nut eaten by the salmon becomes a spot on its skin. The Hazel tree provided shade, protection and baskets. In Europe and North America, hazel is commonly used for 'water-witching' - the art of finding water with a forked stick. Magically, hazel wood is used to gain knowledge, wisdom and poetic inspiration.
Q	apple	quest	afal	A dense, fine-grained, rosy-coloured wood with a slightly sweet smell. The Apple is the earliest cultivated tree. It is associated with choice. At Somerset, an auction was held for single acre plots on two pieces of common land. Plots were marked and matching marks made on the fruit. The apples were then placed in a bag and commoners were allocated land by the distribution of the fruit. All the acres of land were similar, as many times today choices must be made between similar and equally attractive things. Regardless, the choice must be made. In Norse myth, Idunna was the keeper of the 'apples of immortality' which kept the Gods young. The 'fruit-bearing tree' refered to by Tacitus in his description of Norse runic divination may have been the apple. Apple indicates choice, and is useful for love and healing magic.
M	vine	muin	gwinwydden	The vine has been cultivated for a very long time throughout Europe and is one of the greatest suppliers of wine. Due to the heady effects of wine this plant was associated with the loss of inhibitions and the loosening of the tongue. It represents the release of prophetic powers and the revealing of truths.
G	ivy	gort	eiddew / iorwg	Ivy is able to thrive and grow in almost all environments, it is extremely strong and is very difficult to destroy. Its stalks grow in what appears a helix and therefore represents the growing spiral of self enlightenment that was sacred to the celts. It symbolizes the soul and its journeys both inner and outer on its search for nourishment.
nG	broom / reed	ngetal	banhadlen / cawnen, corsen	Broom is the equivelant of Furze or gorse and was also used to sweep ritualistic areas to purify them. It is set on fire to burn away all the old growth and make way for the new. It is seen as a good plant to use when wanting to make new starts or begin new ventures.
St	blackthorn	straif	draenen ddu	Blackthorn is a winter tree. The sloe, its fruits ripen and sweeten only after the nip of the frost. White flowers are seen even before the leaves in the spring. It is black barked with vicious thorns and grows in dense thickets. The wood is used in the cudgel shillelagh and Blasting Stick. Its thorns are used to pierce waxen images. Blackthorn indicates strong action of fate or outside influences that must be obeyed.
R	elder	ruis	ysgawen	The Latin name sambucus is derived from a Greek word for a wind instrument made from elder. The pith can easily be removed from the small branches to make a flute. Elder regrows damaged branches with ease and can root rapidly from any part. A tea for purifying the blood can be made from the flowers and wine from the fruit, but in general the tree is poisonous. In Norse mythology, the Goddess Freya chose the black elder as her home. In medieval times it was the abode of witches and it was considered dangerous to sleep under its branches or to cut it down. Sticks of Elder were used as magical horses by Witches. Elder indicates the end in the beginning and the beginning in the end. Life in Death and Death in Life.
A	fir / pine	ailm	ffyrtidwydden / pinwydden	Fir is a very tall slender tree that grows in mountainous regions on the upper slopes. Fir cones respond to rain by closing and the sun by opening. Fir can see over great distance to the far horizon beyond and below. Fir indicates high views and long sights with clear vision of what is beyond and yet to come. The Pine tree is an evergreen, its old title was "the sweetest of woods". Its needles are a valuable source of vitamin C and can loosen a tight chest. The scent of Pine is useful in the alleviation of guilt. The Bach's flower remedies lists it for dealing with feelings of guilt. Pine indicates issues of guilt within you.
O	gorse	onn	eithin	Furze, or gorse was used to sweep important areas and is seen as a purifier. It is said that burning the blooms and shoots will calm the wind, it is also set on fire to burn away all the old growth and make way for the new. It is seen as a good plant to use when wanting to make new starts or begin new ventures.
U	heather	ur	grug	Heather grows in great abundance and helps form vegetation known as heath this is believed to be the source of the phrase heathen as many ceremonies of this nature were carried out on the heath. Its blossoms can be made into tea and it is a great producer of honey with the aid of the spirit messengers - bees. It has come to represent healing and a way to be closer to the otherworld.
E	aspen	edhadh	aethnen	The Aspen has much symbolism to do with christainity and the devil, the reasons being: Christs cross was made from aspen and Judas was supposed to have hanged himself from this tree. The tree itself is used to commune with the otherworld - demons in particular and is used for protection against the forces of darkness.
I	yew	ido	ywen	A beautifully smooth, gold-coloured wood with a wavy grain. All parts of the tree are poisonous except the fleshy covering of the berry, and its medicinal uses include a recently discovered treatment for cancer. Long associated with magic, death, rebirth and the runes, the yew may be the oldest-lived tree in the world. Ancient yews can be found in churchyards all over Britain, where they often pre-date even the oldest churches. There are some convincing arguements for it being the original 'World-tree' of Scandinavian mythology. In Europe, yew wood was used for making bows, while on the northwest coast of North America, the Pacific yew (Taxus brevifolia) is used by the Haida and other tribes for making masks and boxes. Yew may be used to enhance magical and psychic abilities, and to induce visions.
EA	aspen	ebhadh	aethnen	see above
IO	spindle tree	oir	piswydden	The wood of the spindle tree is bright, colourful and was used to make spindles. With this in mind we can see why it came to embody creative inspiration, purification, initiation and blessings.
UI	honeysuckle	uileand	gwyddfid	Also known as Woodbine this represents attraction and sweetness, it is useful for spells concerning glamours or attracting something into your life.
AAEE	beech	phagos	ffawydden	Beech wood is closely grained, very easy to work giving a smooth even surface. At one time Beech tablets were used as writing surfaces because of the above mentioned qualities. Beech and book have the same word origins. Beech is concerned with ancient knowledge as revealed in old objects, places and writings. Beech indicates guidance from the past to gain insight which protects and provides a solid base upon which all relies.

Sources ~~ Sacred Woods and the Lore of Trees / Ogam