The lifespan of a Christmas tree depends on several factors, such as the species, the care it receives, and the climate it is exposed to. In general, most Christmas trees have a lifespan of around 10-15 years, but some can live for much longer with proper care and maintenance. It is important to keep the tree well-watered, to protect it from pests and diseases, and to avoid exposing it to harsh conditions that could cause premature death. Additionally, choosing a species that is adapted to your local climate can also extend its lifespan.