Christmas trees typically last about four to six weeks, depending on their freshness and how well they are cared for. It's important to keep the tree watered and away from direct heat sources to prevent it from drying out too quickly. Additionally, you should avoid placing the tree near heaters or other sources of heat, which can dry out the tree faster and increase the risk of fire. By taking proper care of your Christmas tree, it can last through the entire holiday season and become a cherished memory for years to come.