. Video: This NFPA/UL video demonstrates the flammability of a dry Christmas tree vs. a tree that has been watered regularly. Facts & figures Between 2007-2011, U.S. fire departments responded to an average of 230 home fires that started with Christmas trees per year. These fires caused an average of 6 deaths, 22 injuries, and … Continue reading Home Christmas Tree Safety Tips from the National Fire Protection Assoc.