Install the tree in a deep, non-tip stand, and make sure the water level on the tree never drops below the butt of the tree. When setting up a tree at home, place it away from heat sources such as fireplaces and space heaters. Because heated rooms dry live trees out rapidly, be sure to keep the stand filled with water. Avoid placing your tree in high traffic areas, doorways or blocking possible exits. Discard the tree as soon as it shows signs of drying out.
Dry trees are unattractive and very dangerous.
Indoors or outside, use only lights that have been tested for safety by a recognized testing laboratory. Look for certification on the box before you buy holiday lights. Small, new lights are safer than the older large bulb style which get hotter and will dry out your tree faster. It might be time to replace your holiday lights. Check each set of lights, new or old, for broken or cracked sockets, frayed or bare wires, or loose connections.