Well, if you're storing your Christmas tree for the off-season, the best way to do it is to keep it well protected. You could wrap it in a tree bag or even a tarp to keep it clean and free from any damage. Make sure the tree is completely dry before you store it, and consider adding some mothballs or cedar to the bag to keep insects and rodents away. Make sure the tree is stored in a cool, dry place to prevent any mold or mildew growth.