For those celebrating Christmas, a live tree can be a beautiful home accessory while serving as a decorating centerpiece for the holiday season. However, considering how short-lived a cut tree is, a more sustainable choice might be to buy a living tree that can either be used year after year, or that can be planted in the yard to supply shade and wildlife habitat, and act as a living windbreak for decades to come.
Source: How to care for a living Christmas tree : TreeHugger