15 Poisonous Plants You Might Have at your Home

#2 Castor Oil Plants

Castor Oil Plant

Castor oil plays a part in many home remedies, but the actual plant itself is more likely to kill you than cure you. The seeds contain one of the most poisonous naturally occurring substances known to man, according to Cornell University College of Agriculture and Life Sciences. Just one seed can kill a child, as the toxic protein ricin can cause severe dehydration from vomiting and diarrhea.