Each of the ogam characters has a specific place on the left hand, the consonants are positioned on the fingers themselves whereas the vowels are at the base of the fingers. The consonants are representative of the different lunar months whilst the vowels represent the solar cycles. Five has always been seen as a sacred number traditionally associated with the goddesses and the changing cycles. It is seen as the number which represents the variety and colour of our three dimensional space representing our senses and the five elements: earth, air, fire,water and the soul, these in turn correspond with the seasons. The five tree vowels are known as the "Sweet Cauldron of the Five Trees" which are represented in Robert Graves' poem.

Finger Ogam was used as a form of divination, the left hand was held over either an object or a person and meditated upon. Where ever a vibration or tingle is felt this signifies the answers and circumstances regarding the question.