The best time to remove your Christmas tree is after the 12th Night (January 5th), which is the traditional end of the Christmas season. However, if you wish to keep your tree up for longer, it's best to store it in a cool, dry location away from direct sunlight or heat sources, and to keep it well watered. Ultimately, the decision is yours, but it's important to keep your tree in good condition to avoid any fire hazards or other safety concerns.