Trees should be disposed of in a sustainable manner, so that they don't end up in landfills. One way to do this is to recycle your Christmas tree. You can contact your local municipal waste management facility to find out if they accept Christmas trees for recycling. You can also consider donating your tree to a wildlife habitat, where it will be turned into shelter and food for animals. Alternatively, you can cut up your tree and use the branches as mulch in your garden. Whatever you choose to do, make sure you dispose of your tree responsibly so that it doesn't end up as waste.