Spirit of the Forest: How Samhain Shaped the World

Long before Halloween filled streets with costumes and pumpkins, the people of Ireland gathered around great fires to mark the turning of the year. They called it Samhain, the ancient Celtic festival that marked the transition between light and dark, life and death, harvest and winter.

It was a sacred time when the veil between worlds was believed to grow thin, allowing the spirits of ancestors to walk once more among the living. Far from being a time of fear, Samhain celebrated respect for nature’s cycles, understanding that endings and beginnings are part of the same rhythm.

The Celtic Roots of Halloween

The ancient Celts lived closely with the land. As crops were gathered and trees shed their leaves, Samhain signalled the moment to rest, reflect, and renew. Fire held deep meaning, symbolising protection and rebirth. Communities came together to light bonfires, share food, and honour those who had passed.

From these ancient rituals, modern Halloween was born. The tradition of carving pumpkins, for example, began right here in Ireland, but it wasn’t pumpkins the Celts carved. People hollowed out turnips and placed candles inside to ward off wandering spirits. When Irish emigrants brought their customs overseas, the American pumpkin, easier to carve and more plentiful, replaced the humble turnip.

Just as with St Patrick’s Day, Ireland’s cultural influence travelled far and wide, shaping global Halloween celebrations that millions now enjoy every October.

Samhain: Nature’s Lesson in Renewal

Behind the costumes, sweets, and celebrations lies a deeper truth, one our Celtic ancestors knew well. Samhain was never just a festival; it was a reminder. A reminder that we are part of something vast, cyclical, and living.

The ancient Celtic calendar divided the year by nature’s moods, not by human schedules. It recognised the land as a living system to be worked with, not against. In many ways, Samhain was the first sustainability lesson, teaching balance, gratitude, and respect for the earth.

As we face climate change today, that message feels more relevant than ever. Our ancestors saw renewal in decay, hope in endings, and life in the quiet stillness of winter.

Rekindling the Spirit of the Forest

At Grown Forest, we carry that ancient spirit forward. By planting native Irish trees, we’re not only restoring biodiversity, we’re reawakening Ireland’s natural heritage. Each sapling carries a story of renewal; each root anchors a promise of hope for generations to come.

Just as ancient communities lit fires to protect their people, we plant trees to protect our shared future. Every tree planted reconnects people with place, honouring the Celtic belief that nature and humanity are inseparable.

Samhain and Sustainability: Ireland’s Living Legacy

Today, as autumn air settles and daylight fades, Samhain invites us to slow down, reflect, and reconnect. Beneath the costumes and carved pumpkins lies Ireland’s enduring legacy, a connection to nature that has inspired the world for over two thousand years.

Halloween may now sparkle with lights and laughter, but its roots run deep in Irish soil. Beneath it all, the Spirit of the Forest remains, ancient, patient, and waiting for us to remember.

Neil McCabe – Grown Forest Founder

“My Grandad believed trees were a sacred link between the past and future, planted for joy today, yet growing for generations to come”