Today is world poinsettia day, named in honor of Dr. Joel Poinsett, who introduced this rare tropical Central American plant to the United States in the early 1800s. While holiday flowers and plants are both seasonal and beautiful, there can be danger associated with them. When poinsettias are damaged, a milky-white substance appears that can cause skin irritation and internal distress. Many other holiday favorites are dangerous too, such as holly, mistletoe, and the Christmas rose. They're all poisonous. They'll require special care and should be kept away from small children and pets. After handling these plants, wash your hands thoroughly to avoid ingesting any toxic poisons or contaminating food, clothes, or other surfaces. For safety, handle holiday plants with care and always keep them up and away from pets and little ones. And that's the On The House tip for today.