That depends on the tree's species and how well it has been cared for. Fresh-cut Christmas trees, such as Douglas Firs and Noble Firs, can last up to six weeks when properly cared for, while live Christmas trees, such as Blue Spruce or Norway Spruce, can last for several months or even years if regularly watered and kept in optimal conditions. Artificial Christmas trees, on the other hand, can last for several seasons if properly stored and maintained. Regardless of the type of tree, it is important to monitor its condition regularly and make any necessary adjustments to ensure it remains healthy and vibrant.