I thought they were poisonous, too. Found this:
But if you believe that Poinsettias are poisonous, you're not alone. In a poll mentioned at the twilightbridge web site, only 16% of adults knew that the plants are non-toxic. (50% of respondents believed Poinsettias are poisonous and 34% said they didn't know.)
But I have to say, I definitely do NOT suggest that any part of a Poinsettia should be eaten, particularly by small children, who could suffer some discomfort and stomach upset even though they will not be poisoned.
Animals – particularly cats – should be kept away from Poinsettias because they tend to vomit after eating ANY houseplant... even those "cat oats" that are grown specifically for them to chomp on.
So... for your peace of mind (and to avoid cleaning up kitty puke from the rug) it's a good idea to display your Holiday Poinsettias away from the kids and the cats, even if you now know that no permanent damage is likely to occur. http://landscaping.about.com/gi/dyna...page.cfm/21187