The Celtic tree calendar (existed before the Roman calendar) has 13 lunar divisions named after trees and is used by the Celts.

In this calendar, each month has fixed dates.

December 23 is not ruled by any tree for it is the traditional day of the proverbial “Year and a Day” in the earliest courts of law.

Beth (Birch) December 24 to January 20

Beth, the Birch month, is a time of regeneration and new projects. This is the perfect time to go back to the light once again as the Sun comes back.  During this month, we celebrate the light as the days grow longer. We look up to the beautiful white birch trees for guidance.

Symbolic Meaning: New Beginnings, Growth, Renewal, Rebirth, Adaptability

Ruling Planet: Venus

Ruling Elements: Air & Water

Corresponding Star Sign: Capricorn

Language of Flowers meaning: meekness

Colors: white, silver, and red

Associations: Beltane, Whitsun, Samhain, witches’ besoms, fly agaric mushrooms, Freya, Frigga, Lugh, Arianrhod, Blodeuwedd

Luis (Rowan) January 21 to February 17

Luis, is the Rowan month associated with Brighid. This is the perfect time to perform initiations and for spells of power, success and travel. During this month, we celebrate the Imbolc. 

ASSOCIATIONS

Color – white, grey, red

Animals – bear, groundhog, and duck

Planet – Uranus

Gemstone – Peridot, ruby, bloodstone

Flower – Snowdrop

Brigid is the goddess of fire, hearth, and protection. She watches over mothers and families. Brigid is celebrated during Imbolc on February 2. 

Nion (Ash) February 18 to March 17

Nion, is the Ash month. It’s a best time to cast the spells that focus on the inner self, spiritual journeys, and prophetic dreams. The most productive tools are made from the branches of the Ash tree.

RELATED ELEMENTS

Planets – sun and Neptune

Element – fire and water

Stone – turquoise and lepidolite

Birds – snipe

Animals – unicorn

Color – blue

Gemstone – beryl

Deities – Thor, Woden, Mars, Uranus, Gwydion, Odin, Poseidon, Eostra, Minerva

Day – Wednesday

Tarot – hanged man

Fearn (Alder) March 18 to April 14

Fearn, is the Alder month. It is at this time, Spring time, when Alder flourishes and grows on the riverbanks, bridging the earth to the heavens. This is the perfect time to make spiritual decisions and to perform divination. The Alder is commonly used in Faerie magic.

Associations:

Planets – Mars

Element – Fire, Water

Stones – Amethyst, Lapis Lazuli

Birds – Hawk, Raven, Seagull

Animals – Snake, Fox

Color – Purple

Gemstone – Yellow Chrysolite

Deities – Apollo, Bran, Branwyn, Wotan, King Arthur, Ares, Pan

Sabbat – Ostara

Saille (Willow) April 15 to May 12

Saille, is the month of the Willow. This month is great for spells of growth, healing, and magic related to the mystery of the women.

In ancient Greece, the willow was closely associated with the Oracle of Delphi. It bestowed the gift of eloquence on the poet Orpheus when he visited it.

RELATED ELEMENTS

Planets – Moon

Element – Water

Stone – Moonstone

Animals – Snowy Owl, Hawk

Color – Silver

Deities – Cerridwen, Persephone, Hecate, Selene, Diana, Artemis

Sabbat – Beltane

Symbolism – Harmony

Uath (Hawthorn) May 13 to June 9

Uath is the month of the Hawthorne. It is the time of fertility, masculinity, sexual energy, and fire. This is the perfect month to make a baby with your partner since male potency is high all the time. This is the month of magic related to business decisions and professional connections.

Duir (Oak) June 10 to July 7

Duir is the month of the Oak. The Oak is a mighty tree that towers over the other trees and is sacred to the Druids. Cast spells involving good luck and money.

Tinne (Holly) July 8 to August 4

Tinne is the month of the Holly. The Holly takes over the Oak when it starts to fall, and is often used in spells of protection. A sprig of holly in your home keeps your family safe.

Coll (Hazel) August 5 to September 1

Coil is the month of the Hazel. This is the month of wisdom and protection magic.

Muin (Vine) September 2 to September 29

Muin is the month of the Vine. This is the time of great abundance. Spells concerning happiness and great passion are best done at this time. This is the perfect time for your ambitions, goals, and dreams.

Gort (Ivy) September 30 to October 27

Gort is the month of the Ivy. This is the perfect time for banishing spells, like to banish negativity from your life. Avoid the things that are bringing you negativity and work on perfecting yourself.

Ivy is associated with the Celtic Lunar Goddess, Arianrhod, Goddess of Reincarnation, fertility, and childbirth. 

Arianrhod represents good luck as well as the mysterious and mystical. 

Associations

Planet: Moon, Saturn

Element: Water

Symbolism: Fertility, Protection, Healing

Stone: Opal

Color: Indigo 

Bird: Lark, Swan, Swallow 

Deity: Ariadne, Artemis, Arianrhod, Pasiphae, Dionysus, Bacchus, Osiris

Flowers meaning: friendship, marriage, talent to please

Ngetal (Reed) October 28 to November 24

Ngetal is the month of the Reed. This is the time of the Elm moon, and is the time when the dead are being summoned to the Underworld. This is usually the time when seances are held, and is also the perfect time for divination and scrying.

Ruis (Elder) November 25 to December 22

Ruis is the month of the Elder. This is the time of endings. This is the perfect time for spells related to renewal and new beginnings. You can also use Elder in Faerie magic