A Christmas tree should be taken down and disposed of properly after the holiday season, usually around January 6th, also known as Three Kings Day or Epiphany. This date marks the end of the Christmas season and is a traditional time to take down decorations and return them to storage. If your tree is artificial, it can be taken down and stored away for the next year, but if it's real, it should be disposed of properly. You can choose to donate your tree to a wildlife organization or tree recycling program, or you can chip it for mulch and use it in your yard.