Locked behind black iron gates, the Poison Garden, located in the Alnwick Garden in northern England, would be a serial killer's candy store. They have a special license from the UK’s Home Office to grow hallucinogenic plants. The garden says despite taking precautions, “some people still occasionally faint from inhaling toxic fumes while walking in the garden.” Some of the most dangerous plants growing here are hemlock, deadly nightshade, wolf’s bane and ricin — the world’s deadliest plant.
