I'm up on Parent.co spreading a little holiday cheer and research-based safety advice. Poinsettias are not even a little bit poisonous (though most definitely NOT delicious), and yet the myth of their toxicity persists:
The child who may or may not have existed and who may or may not have died is long gone from memory, but the effects of his story linger nearly 100 years later – a testament to the long-reaching effects fear can have on our collective parenting decisions. Belief in poisonous poinsettias has been as persistent as belief in Santa Claus, in spite of mounting contrary evidence.
You can read more here.