Here are a few sights about plants that are not safe for pets that I have in my favorites for referencee..just incase.
Toxic and Non-Toxic Plant List - Dogs Toxic and Non-Toxic Plant List - Dogs Poisonous Plants: A List of Plants that are Dangerous for Small Pets
and this one is my favorite one to use because they list the part that is the bad part for the pet to get a hold of.
Poisonous Plants to your pets