10 Poisonous Plants Found in the United States ...
Aug 08, 2018· 10 Poisonous Plants Found in the United States. When out in nature, beware of crossing paths with these plants. Water hemlock is a type of poisonous plant commonly found in the United States. Share. ... conifer and mixed broadleaf forests of the western United States. Its leaves and stems produce an oily substance that is itchy to the human ...