What is the Most Poisonous Plant in the World?

Answer:

The castor bean plant is the most deadly of all plants. Eat a single castor bean, or perhaps two if you're an adult, and you'll die. If you live beyond three to five days, you will probably survive. Castor beans (not true beans, but rather seeds) contain a poison, called ricin, which works by preventing cells from making proteins, says the CDC (Center for Disease Control). Cells die without the proteins, and the resulting damage to the body can be great enough to eventually kill a person. The plant originally came from Eastern Africa, but now grows wild all over. Many cities plant it in parks, and other public places.