(CNN)If you're wondering whether to cut down a real tree this year or go buy a plastic reusable one, you're not alone.
The great Christmas tree debate: real vs plastic
In fact, that's one of the most Googled questions this holiday.
Gregory Keoleian, a professor with the University of Michigan's School for Environment and Sustainability, suggests either buying a tree you can later plant outdoors, or giving your business to a Christmas tree farm.
"I do get a natural tree because it's very dry and we need to add humidity to our house ... and I do appreciate the tree aesthetic," said Keoleian, also co-founder and director of the Center for Sustainable Systems.
Keoleian buys his trees from a tree farm.
Christmas tree farms typically use marginal agricultural land, he says, and the trees provide environmental benefits as they grow. New trees are constantly planted. In addition, the Christmas tree farms provide a livelihood for farmers.
But don't just go into the forest and cut down a tree. Those trees could grow to be 50 to 100 years old if left alone, and they're helping the planet by sequestering carbon.
So: Christmas tree farm = good. Chopping down tree in a forest = bad.
As for plastic trees, if you already have one, use it!
Artificial trees are usually made from PVC, so they are not recyclable and must be sent to a landfill. But after using it about five years, the environmental footprint is lessened.
If you want to get rid of your plastic tree, offer it up free on Craigslist or Facebook Marketplace before dooming it to the landfill.
When you're done with your natural tree for the year, make sure to compost it. Most neighborhoods have easy options ... unless your tree is flocked.
To flock or not to flock?
That is the question. And the answer: 'Tis nobler to refrain.
While there's some debate about how environmentally problematic flocking actually is, most composting companies won't take a flocked tree with artificial snow.
So check first if you don't want your tree heading to the landfill.
Other kinds of "trees"
Los Angeles-based author Vanessa McGrady opted for a different kind of tree in her home this year. Behold: The Book Tree!
"I've never felt super okay about killing a tree (and spending all that money) just for a couple of weeks' worth of decoration at the holidays," explains McGrady.
"2019 was the year of the book for us, because I had a book published and my daughter suddenly became this voracious book nerd, so a book tree seemed like a good choice. I had to redo it a couple of times before it looked okay!"
Lighting the tree
Keoleian says one of the best things you can do for the environment is check the lights on your tree.
"The older big bulb (C9) incandescent tree lights are very inefficient and should be replaced with LED's. It's easy to identify them because they got hot quickly and can even pose a fire risk."
Using LED lights can save you 90% on your electricity bill.
Keoleian also recommends putting your lights on a timer to save additional electricity (and to keep things friendly with the neighbors who might be annoyed by your 24-hour Clark Griswold display).
Looking for more ideas?
Keoleian's department at the University of Michigan produced its own video this year with ideas for more sustainable Christmas decorating.
Beautiful (and Compostable!) Gift Wrapping
"Wrapping paper that is metallic, has glitter or is laminated is not recyclable" says Keoleian.
If you're as sad about this glitter thing as I am: Hark! The Herald Design Bloggers are here to rescue you.
Whitney Leigh Morris of the Tiny Canal Cottage showcases some of the truly beautiful gifts she's "wrapped" this season on her blog.
She covers her presents with book jackets, tea towels, upcycled and resewn old garments, and cotton muslin cloth bags to wrap up her presents.
Sometimes she adds a repurposed ribbon and she almost always hunts around for some natural ornamentation: "We adorn any gift we're giving with greenery clipped from the garden or from around the neighborhood."
Sustainable gift ideas
"When it comes to gifting, we're trying as hard as possible to do locally made goods in sustainable packaging. Because it's not just the present itself that has a carbon footprint, it's the packaging as well. The more you can cut back on the distance the gift has to travel, the better," says Morris.
The grapevine in the backyard of Morris' tiny cottage provides fruit that her neighbors then turn into jam.
At Christmas, all her friends get mason jars full of the stuff.
"So we're gifting homemade jam that was grown right here in the city. There's no waste involved. That's a great joy because people love a handmade gift."
And if it's not homemade, Morris tries to make sure it's still environmentally friendly.
"For other items we're gifting, we're trying to select low-waste home goods and hygiene products that we know people are interested in, but have yet to try. For example, there are toothpaste tablets now available in refillable glass jars, and those are great because one billion toothpaste tubes are thrown out each year."
Morris also likes to give shampoo bars as gifts.
Blogger Erin Boyle of Reading My Tea Leaves focuses on gifts that don't take up a lot of space in her Brooklyn Heights apartment.
"I always say for me the two best boxes to tick are 'useful' -- something you can use in your home and 'something that goes away.' There's just not that much room for stuff."
The Buy Nothing Project
"I'm part of the Buy Nothing Proj