Did You Know That You Can Eat Your Christmas Tree? It seems that people are leaving Christmas trees up a little later this year, because it's something nice to look at in a time when things are bleak and boring. If you've got a real tree, you know your days are numbered, because sooner or later that thing is going to die. It turns out you don't have to throw it out, because you can eat it. Julia Georgallis released a cookbook recently, called ThinkStock "How can we make something sustainable around Christmas time? What can we eat? What's the thing that no one eats that kind of represents Christmas? And then we just settled on Christmas trees," Georgallis says. "What I aimed for this book to do, really, was to get people thinking about the odd ways that they can be more sustainable in their daily lives."