The lifespan of a Christmas tree can vary depending on the type of tree and the conditions in which it is grown. Typically, a Christmas tree can last anywhere from 6 to 15 years. However, with proper care and maintenance, some Christmas trees have been known to live for up to 25 years or more. The key factors that can impact the lifespan of a Christmas tree include the climate and weather conditions in which it is grown, the quality of the soil and water, and the level of care and attention it receives.