Theo Wargo // Getty
Theo Wargo // Getty

9 Ways Christmas Trees Are Reused After the Holidays

Theo Wargo // Getty
Theo Wargo // Getty

You don’t need a calendar to tell you when the holidays have ended—just take a look outside to see if rows of skimpy, dried-out Christmas trees are lining the curb. Each year, roughly 33 million live Christmas trees are purchased in North America, many of which end up rotting in landfills once the new year arrives. But making our days merry and bright isn’t the only thing a felled evergreen is good for. Here are some ways Christmas trees continue to serve a purpose long after their decorations have been packed away.


The tree that’s erected in Manhattan’s Rockefeller Center each November is arguably the most iconic Christmas display there is. It’s also one of the largest, reaching up to 100 feet tall and often weighing more than 10 tons. That’s a lot of lumber, and luckily, Habitat for Humanity makes sure it’s put to good use. Every year since 2007, Rockefeller Center has donated its tree to Habit for Humanity International after taking it down on January 9. From there, the festive behemoth (usually a Norway Spruce) is divided into sections in the plaza before it's shipped to a mill in New Jersey for additional sawing. It’s eventually made into 2-by-4 and 2-by-6 beams used in construction projects around the country. Homes in Bridgeport, Connecticut, Morris, New Jersey, and Philadelphia all contain pieces of what was once the world’s most famous Christmas tree in their walls.


If you were to walk along the bottom of Lake Havasu between Arizona and California long enough, you’d eventually come across the site of a Christmas tree graveyard. What may be a creepy scene to holiday lovers is a lush utopia for fish—the branches of the spruces, firs, and pines provide a hiding place from predators and attract food for the fish to nibble on.

The 875-acre artificial reef resting on the lakebed consists of PVC pipe, cinder blocks, concrete sewer pipe, brush, and thousands of Christmas trees weighed down with sandbags. Decades of decomposed plant matter have built up a healthy layer of moss and algae around the non-degradable structures. This green coating attracts insects, which in turn attract fish looking for a snack. The end of the holiday season marks the introduction of 500 new trees to the reef, each of which will take about five or six years to break down completely.


Spend a day on the beach in summertime and Christmas trees will likely be far from your mind—but on at least one beach along the East Coast, there are thousands of abandoned conifers buried in the sand. That’s because Bradley Beach, New Jersey depends on recycled Christmas trees to build its sand dunes. Discarded trees are laid out on the beach and held in place between two parallel fences. Sand that blows in from shore gets caught in the branches, eventually packing into a full sand dune over the course of several seasons. Unlike piles that have been pushed together with bulldozers, sand dunes that are allowed to build naturally over time provide a more stable barrier against storm surges. When the time is right, the town plants dune grass to give the structures even more stability, with the vegetation's hairy roots anchoring trees in the sand.


An elephant plays with a Christmas tree at a zoo in Germany. Image credit: Odd Andersen // Getty Images

In the wild, many animals encounter plant life that changes with the seasons. The Oakland Zoo in California hopes to simulate this seasonal variety in captivity with annual Christmas tree donations. Each year, a local Christmas tree lot hands over whatever’s left of their inventory at the end of the season. The zoo’s residents are more than happy to take the trees that others didn’t want—zebras munch on the needles, squirrel monkeys swing from branch to branch, and otters play games of “smell and seek” with treats hidden in the trees by zookeepers. Oakland’s zoo isn’t the only one to take advantage of the surplus of trees at the end of year. The Staten Island Zoo, the North Georgia Zoo, the Linton Zoological Gardens in the UK all accept tree donations.


Christmas trees are a key tool in the fight to save Louisiana’s marshland. The state loses 25 to 35 miles of coastal wetlands a year to advancing ocean tides, and one thrifty way to prevent further damage is by building fences around the marsh’s perimeter. Since the Santa Saves the Marsh project began in 1986, over 1.5 million Christmas trees have been used for this purpose. Following the holiday season, bundles of timber collected from around the country are flown in via a helicopter on loan from the Army National Guard and dropped into the wetlands below. These trees are used to stuff pre-built wooden pens surrounding the bayou. Today, more than eight miles of Christmas tree fencing lines the vulnerable habitat, and it’s already proven valuable: When Hurricane Katrina hit Louisiana’s southern coast in 2005, the shoreline behind the barricade was better protected.


Christmas trees likely aren’t the alternative fuel source of the future, but that hasn’t stopped Burlington, Vermont from ringing every watt of energy they can get from their seasonal haul. The Joseph C. McNeil Wood and Yard Waste Depot collects hundreds of unwanted trees from households and Christmas tree lots at the end of each holiday season. That organic waste gets fed to a wood chipper, and part of the mulch that comes out is sent to the local power plant where it’s tossed into a boiler. The heat generated from the boiler evaporates water into steam that's used to power the turbine in the plant's generator. Each tree that's incinerated amounts to about 36 cents worth of energy for the town.

The Merry Mulch Project isn’t able to produce enough fuel to keep the plant running on 100-percent Christmas tree power (for that, the boiler would need to be fed the equivalent of 100 trees per second), but luckily, Burlington uses other renewable resources like wind and water to keep the city running throughout the year.


It’s hard to go for a hike through Dunbar Cave State Park in Tennessee without trampling on ghosts of Christmas past—all of the mulch used to cushion their trails is made from old Christmas trees. A thousand trees are mulched by the park as part of their annual Trees to Trails program and laid along pathways by volunteers. According to the National Christmas Tree Association, Friends of Dunbar Cave board member David Boen said they stick to Christmas trees exclusively because “by definition they don't have any invasive species or seeds.” In addition to making them easier to walk on, mulch also protects trails from damaging water run-off.


Since 2012, artist Michael Neff has installed a seasonal art project in New York City. “The Suspended Forest” started with a handful of forgotten Christmas trees hung illegally beneath an overpass in Williamsburg. The most recent iteration included 40 floating trees harvested from sidewalks and tree lots after Christmas. They were on display in a warehouse in Queens through the month of January (this time around, Neff had actually received permission to put them there). He hopes to keep bringing the exhibit back to New York and potentially re-imagine it for different cities in the future.


If a Christmas tree doesn’t end up hanging in a warehouse, decomposing on a lakebed, or providing festive scenery for a landfill, it’s most likely turned into mulch. Plenty of towns pulverize their discarded Christmas trees for use in parks and public spaces, but San Diego does something a little different with theirs. For decades the Miramar Greenery has invited city residents to pick up free mulch and compost for use on private property. After dropping off unwanted trees at locations around town or dumping them on the curb, families can visit the Greenery later in the year to collect the mulch they helped contribute to. In a single year, the recycling program can make mulch out of nearly 1000 trees, making the city’s Christmas trees the gifts that keep on giving.

To Encourage Responsible Trash Disposal, a Startup in Nigeria Pays People for their Waste

Nigeria is home to more than 180 million people, who produce more than 32 million tons of waste per year and just 20 to 30 percent of this garbage is collected, according to one estimate. To provide Nigerians with incentive to dispose of their trash responsibly, Junks, a Nigerian waste management startup, provides people with the chance to exchange their trash for cash, according to Konbini.

The company offers to pay for items and materials like discarded electronics, glass, plastic, aluminum, books, and clothes. Once purchased, these materials are re-sold to wholesalers and recycling companies, according to Techpoint. Potential users who want to sell their trash are required to register on the startup's website,, and fill out a form with a description of the trash they're selling, along with their asking price and contact information. Once this information is received, representatives from Junks are sent to pick up and pay for the waste.

Computer programmer Bradley Yarrow founded in August 2017. Based in Port Harcourt, the capital of Rivers State, Nigeria, the company currently has just three employees, in addition to Yarrow. That said, the tiny startup appears to be doing big business, judging from a growing list of sold junk—which includes laminating machines, old laptops, and scrap car parts—already listed on

[h/t Konbini]

High-Tech Skyscrapers Could be Built with Low-Tech Wood

When we think of wood construction, we often think of log cabins, tree houses, or the framework of residential properties. But if a new start-up has its way, we might soon be gazing up at 12-story buildings made almost entirely out of Douglas firs.

In a report for CityLab, journalist Amanda Kolson Hurley profiled Portland, Oregon's Lever Architecture, a firm attempting to revitalize wood-based towers that reduce the carbon footprints of conventional buildings. Their offices are located in a four-story property made from wood; their next major project, titled Framework, is expected to be 12 stories and slated to debut in Portland in 2019.

Part of Lever’s goal is to reduce concerns over wooden structures—namely, that they’re prone to fire hazards or might not be structurally sound in an earthquake. Developers use a building material called mass timber, a special type of strengthened wood in which timber panels are glued together to make beams and cross-set layers for walls and floors. Fire tests have shown the mass timber doesn’t ignite easily: It chars, which can insulate the rest of the panel from the heat. Strength testing has shown the layers aren’t easily jostled by outside forces.

Lever’s architects hope that wooden buildings will lessen the environmental impact of commercial towers that use concrete and steel, which are responsible for 10 percent of greenhouse gas emissions during their manufacturing.

Other firms have designs on taller buildings, including one 35-story tower in Paris and a 24-story building in Vienna.

[h/t CityLab]


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