To make your Christmas tree last longer, you should follow these steps: Keep it away from heat sources, such as a fireplace or heater. This will help prevent the tree from drying out and losing its needles. Make sure the tree is well watered. A thirsty tree will shed its needles quickly. Trim off any dry or brown branches. This will help the tree look its best and last longer. Hang ornaments and lights with care. Don't overload the tree with too many decorations.