Flame-Retardant

• An artificial Christmas tree should be fire- and flame-retardant. This means the tree will still burn, but it will take longer to burst into flame, and to actually burn, than one that isn't fire and flame retardant.
  
  

The Stand

• When deciding on a particular tree, choose one that comes with four legs placed in an "x" shape. This configuration will ensure the balance and stability of the tree, making it harder to tip over.
  
  

Density

• A "dense" tree, one with lots of branches, is safer than a less full one for those who own cats or ferrets that might try to climb the tree. The extra branches, especially those that are placed on the trunk in alternating spaces, will make the tree difficult for climbing.
  
  

Watering

• Real trees will dry out if not watered properly, posing a fire hazard. This is not a concern for artificial Christmas trees.
  
  

Warning

• Make sure the tree is labeled as being fire- and flame-retardant; don't assume it is. Also, when purchasing a tree that requires electricity, make sure it carries the UL (Underwriters Laboratory) label for electrical safety.