Castor Bean (Ricinus communis): Contains ricin, a highly toxic protein, making it one of the deadliest plants if ingested or inhaled.
Deadly Nightshade (Atropa belladonna): Known for its toxic berries, it contains tropane alkaloids that can cause hallucinations, paralysis, and even death.
Rosary Pea (Abrus precatorius): Its seeds contain abrin, a potent toxin, and even a single seed can be deadly if ingested.
Oleander (Nerium oleander): All parts of this beautiful flowering plant are toxic, particularly its leaves and flowers, causing severe cardiac symptoms when ingested.
Water Hemlock (Cicuta spp.): The most poisonous plant in North America, its roots contain a toxin called cicutoxin that affects the nervous system and can be fatal.
Angel's Trumpet (Brugmansia spp.): Its trumpet-shaped flowers contain tropane alkaloids and can cause hallucinations, paralysis, and even death if ingested.
White Snakeroot (Ageratina altissima): Contains tremetol, a toxin that can be transmitted through milk, causing tremetol poisoning in humans.
Suicide Tree (Cerbera odollam): Its seeds contain a potent cardiac glycoside called cerberin, and ingestion can lead to severe heart failure and death.