Oh Christmas Tree, Which Is the Greenest of Them All?

Even before Santa Claus thought of putting on his boots, or Christmas became a religious holiday, humans were already gathering around winter solstice rituals. The Celtic and Germanic peoples celebrated the lengthening of the days after the solstice by decorating conifers—which remain green in the depths of winter—with ribbons, fruit, or dried flowers. This was a way of marking the rebirth of the sun and the coming of spring, but also of gathering together and sharing food and drink from the year’s harvest.

The tree, standing in the middle of the festivities, became a real rallying point: a symbol of life, renewal, and hope when all around was dark. People gathered around it to warm themselves, sing, eat, and pray together for the return of light.

Today, the Christmas tree—whether it’s a fir, pine, or spruce—is sometimes at the center of debate. In a world where everything is so easily polarized, even this symbol of togetherness becomes a source of discord: natural or artificial? Local or imported? Cut or potted?

So, what’s the deal? Which one is the greenest of them all?

The charm of authenticity

It’s hard to beat the charm of a natural tree, with its fresh, woodsy scent that fills the house and brings a little piece of nature into our living rooms. And what about the tradition of cutting down a small tree yourself in the woods or at a nursery, or simply choosing one at the market decorated for the holiday season?

In addition to its natural charm, a real tree has several advantages over an artificial tree, notably because it decomposes after use. It can be disposed of in an environmentally friendly way: shred it to make mulch, compost it, or even use it as a winter shelter for wildlife by planting it in the snow outside.

Buying locally—which is easy in North America, where Canada and the United States are major producers—supports local families and businesses while strengthening regional economies. It also reduces greenhouse gas emissions associated with long-distance transportation.

Christmas tree plantations are often established on former agricultural land, such as pastures in decline, and can support more wildlife diversity than intensive annual monocultures, especially when managed with wider spacing and minimal chemical inputs. During their 8 to 12 years of growth, these trees absorb carbon dioxide, produce oxygen, help stabilize soils, reduce erosion, and can play a role in protecting nearby waterways.

Some disadvantages too

However, natural trees do not only have advantages. They increase the carbon footprint as they have to be transported every year, especially if they are imported. Some farms use herbicides to limit competition or pesticides to reduce pests, which can have an impact on biodiversity, particularly pollinators. Its decorative life is limited to 2 to 5 weeks and it requires regular watering—sometimes up to a liter per day—otherwise it can dry out and increase the risk of fire. The terpenes responsible for its scent can also cause symptoms in people who are highly sensitive to volatile organic compounds.

The artificial tree: reusable, but at what cost?

The main advantage of an artificial Christmas tree is, of course, that it can be reused for several years. This makes it more economical than a natural tree, especially in the long term. Its carbon footprint can even be lower if it is kept and used for at least 8 to 10 years, and ideally up to 20 years, according to studies—a threshold necessary to offset its energy-intensive production.

In terms of maintenance, it is clearly the winner: no watering, no needles to pick up, no risk of insects hiding in the foliage. Several models are also treated with fire retardants, which reduces the risk of fire. Emitting almost no odors or volatile organic compounds (VOCs), it may also be more suitable for sensitive individuals.

For those who do not have access to locally grown natural trees, artificial trees are widely available in a wide variety of sizes, shapes, and colors, sometimes even with lights already attached. They are also generally less expensive.

A heavy price on ecology

However, if an artificial tree is only used for a few years—and the average is between 6 and 9 years—its carbon footprint increases dramatically. Its manufacture requires a lot of energy and emits a lot of greenhouse gases. In addition, the majority are produced in Asia, which adds a significant environmental cost related to transportation.

Their material durability also has an ecological price: artificial trees are generally made of PVC, a petroleum-based plastic that is polluting to produce and sometimes contains other toxic substances, such as flame retardants. At the end of their life, they are very difficult to recycle and almost always end up in landfills, where they will take centuries to degrade. And what about microplastics?

Despite manufacturers’ efforts, artificial trees rarely retain the beauty and authenticity of real conifers—and we have to admit that taking a tree out of a box is no match for the magic of selecting a tree in the great outdoors.

A Christmas tree that will last a long time

Another trend has emerged in recent years: potted Christmas trees. Some companies now sell real, natural trees in pots that you can take home. You can keep them indoors for up to one or two weeks, then water them generously before taking them outside for the rest of the winter. In the spring, when the ground thaws and dries out a little, they can be replanted and will continue to grow.

The most environmentally friendly option

This is considered to be potentially the most environmentally friendly option of all. There is no need to cut down trees: it continues to capture CO2, produce oxygen, and support biodiversity year after year—a lasting gift for nature and your family. Like a cut tree, it can provide shelter for outdoor wildlife, give off the same pleasant scent, and support the local economy. And if it is properly replanted, a potted tree is essentially zero waste. There are even live tree rental services: the tree is delivered, decorated, and then picked up after the holidays to be replanted.

Of course, a potted tree is heavier, bulkier, and more expensive to purchase than a cut or artificial tree. And not everyone has the space to plant a tree in their yard year after year.

It’s also not that easy to keep a potted tree indoors. Accustomed to the outdoors, it may not tolerate the heat of the house well and suffer from thermal shock. It also requires regular watering to prevent it from drying out.

Outdoors, it’s no easier: a potted tree is not insulated from the cold like one planted in the ground, and its roots can freeze completely, compromising its survival. Even when transplanted, the failure rate remains quite high. Finally, don’t forget that a small tree will grow into a large tree! You therefore need to think about where it will be able to grow to maturity.

What we can do to make Christmas trees even greener

For natural Christmas trees, choose a local tree and, if possible, one from a producer who limits the use of pesticides. Even if municipal collection is available in many cities, try to give your tree a second life first: put it outside to serve as a shelter for wildlife during the winter, or turn it into mulch or compost when gardening season returns. And why not extend the magic a little longer? The needles (if the species is edible) can be used to flavor winter recipes, while the branches and trunk can be recycled for sustainable crafts—ornaments, decorations, coasters, fire starters, and more.

When it comes to artificial trees, focus on durability. Choose a high-quality model that you can use for 20 years or more, and store it carefully each year to prevent damage. Buying secondhand—at thrift stores or local resale platforms—is also a great way to reduce your environmental footprint.

For potted trees, choose a species that is native and hardy in your region. Limit its stay indoors to a maximum of 7 to 10 days and place it away from heat sources. Water your tree regularly. After the holidays, keep it outside out of the wind and insulate the pot (dead leaves, snow) to protect the roots from frost. In the spring, plant it carefully, taking into account its future growth.

The tree that brings us together, again and again

Ultimately, there’s no reason to argue about the perfect tree. Each option can be a good choice when you make an informed decision and take care of your tree from start to finish.

Let’s not allow the Christmas tree to become a source of discord. Our ancestors preserved this tradition because it brought people together during times of isolation, allowed them to share the fruits of their labor during difficult times, and strengthened bonds within communities and families. Evergreen despite the cold, the fir tree was a reminder that life goes on and helped keep spirits high until spring. And since these celebrations marked the transition from one season to the next, they provided a reference point in time, a reassuring ritual to be passed down from generation to generation.

So, no matter what form our winter celebrations take, let’s continue the tradition: let’s come together and celebrate what unites us.

Happy holidays!