Celtic Tree Astrology: Which Tree Are You?
Gearóid, founder of Reforest Nation, examines a three-year-old rowan tree planted by Reforest Nation in 2021.
Imagine a world where your personality and life's path aren't determined by distant stars but by the trees that surround you. This is the world of Celtic tree astrology, a mystical tradition rooted in the beliefs of the ancient Druids. Trees, according to this system, don’t just represent shelter or sustenance—they symbolise life, wisdom, and the characteristics that shape our souls. Each lunar cycle in the Celtic calendar is aligned with a specific tree, and those born under a particular tree share in its essence, much like modern astrology’s zodiac signs.
Here, we dive deep into the mystical, tangible, and surprisingly relatable world of Celtic tree astrology to see what these ancient trees can tell us about who we are—and where we’re headed.
The Origins of Celtic Tree Astrology
So, where does this whole concept of tree-based astrology come from? Picture the Druids—ancient Celtic priests who were the original “nature nerds.” They believed that everything in the natural world was interconnected, and that the movements of the moon, the cycles of nature, and human life were all entwined in a great cosmic dance. Instead of looking up at the stars to understand this dance, they looked at the trees. Trees were seen as living entities, full of spirit and meaning, with each species embodying distinct traits and energies.
Their system, the Ogham calendar, was lunar, with each month tied to a different tree. Each tree had its own unique story, just like we each have our own personality quirks (looking at you, Birch-born overachievers). The trees were considered wise teachers, helping us to understand both our strengths and the areas where we need to grow. It's a pretty rad concept if you think about it: nature as both mirror and mentor.
The Thirteen Celtic Tree Signs
Now, let's get to the good stuff—the trees. Just like the zodiac signs, there are 13 tree signs, each with their own vibe. Let’s meet them, shall we?
Birch (December 24 - January 20): The Achiever
Ever noticed how some people seem to be unstoppable? That’s the Birch. Birches are born leaders—ambitious, motivated, and always setting their sights on the next big thing. Like the birch tree, which is often the first to grow back after a fire, Birch-born folks are resilient. They thrive in tough environments and can inspire others with their can-do attitude. However, their relentless drive means they sometimes forget to stop and smell the metaphorical (or literal) roses. Chill out once in a while, Birch!
A rare and beautiful stand of silver birch trees, a sight now uncommon in Ireland.
Rowan (January 21 - February 17): The Thinker
Rowans are the philosophers of the group. If you’re born under Rowan, chances are you’ve got a lot going on upstairs. You’re curious, insightful, and always thinking about life’s bigger questions (and, let’s face it, probably overthinking a lot too). You’ve got a detached vibe sometimes, but it’s because you’re busy plotting how to make the world a better place. Just don’t forget to share those ideas with the rest of us!
An ancient belief is that rowan trees protect against enchantment and evil spirits.
Ash (February 18 - March 17): The Enchanter
Ash folks are the dreamers, the creatives, the ones who are always a little bit off in their own world. And that’s not a bad thing. Ash-born people are deeply connected to their inner lives and the cycles of nature. They’re often artists or spiritual seekers, looking for meaning in the world around them. The challenge? Sometimes they’re so far off in dreamland that they need to be reminded to stay grounded and focus on the here and now.
Ash tree seeds, known as 'helicopters', spin as they fall, helping in wind dispersal.
Alder (March 18 - April 14): The Trailblazer
You know those people who are always the first to try something new or lead the charge into the unknown? That’s the Alder. Alders are confident, action-oriented, and always looking for the next big challenge. They’re the ones who’ll start a new project with boundless energy and inspire others to follow along. Just watch out—Alders can burn out fast if they don’t take time to rest.
Alder tree with cones, planted by Reforest Nation in 2022. Its blood-red sap is believed to symbolise the tree’s connection to the life force.
Willow (April 15 - May 12): The Observer
Willows are the empaths. They feel deeply and are ruled by intuition. These folks are patient and often act as natural counselors or healers, offering support and guidance to those around them. Like the willow tree, they bend but never break, gracefully adapting to life’s challenges. Willows need to make sure they don’t take on too much of other people’s emotional baggage, though. Boundaries, Willow. Boundaries.
Willow trees leaning over a riverbank, reflecting their natural affinity with water.
Hawthorn (May 13 - June 9): The Illusionist
Hawthorn-born people are fascinating because they’re never quite what they seem. They’ve got a bit of a shape-shifter quality—on the surface, they might appear one way, but there’s always something deeper going on. Hawthorns are creative, dynamic, and often a little mysterious. The challenge for Hawthorns? Embracing who they truly are instead of always hiding behind a mask.
Hawthorn, also known as the Mayflower or White Thorn, with beautiful white blossoms deeply rooted in Irish fairy folklore.
Oak (June 10 - July 7): The Stabiliser
Oak folks are the rocks of the Celtic tree zodiac. Strong, protective, and nurturing, they’re the people you want on your team when things get tough. They’re deeply connected to tradition, family, and history, often stepping into teaching or mentorship roles. Oaks are generous and always ready to help others, but they’ve got to be careful not to carry too much on their sturdy shoulders.
The underside of a Sessile oak leaf, planted by Reforest Nation in May 2024. The oak, Ireland’s national tree, supports the highest biodiversity of any tree in Europe.
Holly (July 8 - August 4): The Ruler
If you’re born under the sign of the Holly, congratulations—you’re basically the king or queen of the forest. Holly-born people are ambitious, competitive, and natural leaders. They’re not afraid to tackle big challenges and aim for greatness, but they’ve got to keep their inner dictator in check. Ambition is awesome, but Holly folks need to make sure they don’t steamroll everyone else in their quest for success.
A holly tree with spiked leaves and red berries, often associated with protection and Celtic mythology.
Hazel (August 5 - September 1): The Knower
Ever met someone who just seems to know everything? That’s Hazel. These folks are wicked smart, organized, and have memories like steel traps. They’re natural teachers and scholars, always seeking out new knowledge and understanding. However, Hazels need to be careful not to come across as know-it-alls or to get too bogged down in perfectionism. Hey, it’s okay to make mistakes!
The hazel is the Tree of Wisdom, linked to the legend of the Salmon of Knowledge.
Vine (September 2 - September 29): The Equaliser
Vine people are the diplomats of the zodiac. They can see all sides of an argument and are skilled at bringing balance to situations. Vines appreciate the finer things in life and have a great aesthetic sense, but they’ve got to be careful not to get too caught up in luxury. Their gift lies in their ability to navigate life’s complexities with grace, charm, and balance.
Grapevines are one of the oldest cultivated plants, with vines that can live for centuries.
Ivy (September 30 - October 27): The Survivor
Ivy folks are tenacious. They can survive and thrive in situations that would knock most people down. These people are determined, compassionate, and deeply intuitive. Life might throw them some tough challenges, but Ivies always find a way to push through. Their challenge? Learning to let go of things that no longer serve them and trusting their intuition to guide them through tough decisions.
Ivy climbing a tree; despite common misconceptions, ivy does not harm trees and is vital for biodiversity.
Reed (October 28 - November 24): The Inquisitor
Reed people are the detectives of the Celtic tree zodiac. They love uncovering hidden truths and digging deep to get to the heart of things. Reeds are often drawn to careers like journalism, history, or investigation, where they can satisfy their curiosity. However, their intensity can sometimes make them come off as a bit too probing. Reeds need to remember that not every secret needs to be uncovered!
Golden hour image of reeds by a water body; reeds are essential for wetland ecosystems, providing habitat and filtration.
Elder (November 25 - December 23): The Seeker
Elders are the adventurers. They thrive on excitement, change, and the thrill of new experiences. Elders are often outspoken, independent, and a bit rebellious, always seeking out the next big adventure. But they need to find balance. Too much adventure can leave them feeling ungrounded, and they might benefit from a little more stability in their lives.
The elder tree has long been associated with protection and healing in Celtic traditions.
How Celtic Tree Astrology Can Influence Your Life
Celtic tree astrology isn’t just about knowing your tree sign—it’s about understanding how you can grow and evolve in harmony with nature. Each tree offers its own lessons, guiding you through life's ups and downs. For example, an Oak-born individual might find themselves stepping naturally into leadership roles, while a Willow could embrace a more reflective and healing path.
Understanding your tree sign allows you to lean into your natural strengths and recognize areas for growth. It’s not just a way to label yourself—it’s a tool for self-reflection and personal development, helping you stay grounded and connected to the world around you.
Compatibility in Celtic Tree Astrology
Just like with traditional zodiac signs, compatibility plays a role in Celtic tree astrology. Some tree signs naturally complement each other, while others might find themselves clashing. For instance, an Oak might find harmony with an Ash or Reed, while a Willow would pair well with Ivy or Birch. Understanding these dynamics can help you navigate relationships more smoothly, both in your personal and professional life.
Bringing Celtic Tree Astrology Into Your Daily Life
So, how do you bring this ancient wisdom into your modern life? Start by connecting with nature. Spend time in forests, sit beneath the branches of your birth tree, or incorporate its imagery into your surroundings. Meditating under your tree sign can help you tap into its energy, and you might even...draw strength and inspiration from your tree’s qualities. Wearing jewelry made from the wood of your birth tree or decorating your space with its imagery can help keep you connected to its energy, reminding you of the deep-rooted wisdom that flows through nature and, by extension, through you.
The Druids believed that we are not separate from nature but deeply intertwined with it. By understanding and embracing the wisdom of the trees, we can find more balance, peace, and purpose in our daily lives.
Celtic tree astrology offers us a profound reminder: the wisdom we seek isn’t always found in the stars above but in the trees around us. They stand as silent witnesses to our lives, offering guidance, protection, and a sense of belonging. Whether you’re a driven Birch, a contemplative Rowan, or a free-spirited Elder, the trees are there to help you on your journey. So, what’s your Celtic tree sign, and what can it teach you about your life?
