Question: what are the plants of poisonous?
Answer: Water Hemlock (Cicuta maculata) ...  Deadly Nightshade (Atropa belladonna) ...  White Snakeroot (Ageratina altissima) ...  Castor Bean (Ricinus communis) ...  Rosary Pea (Abrus precatorius) ...  Oleander (Nerium oleander) ...  Tobacco (Nicotiana tabacum)