Get a taste – not literally – of the natural world's most sneaky and dangerous flora with this collection of special tours, displays and workshops at Kew Gardens. Young visitors can follow clues and puzzles on a trail through the gardens to help save London from the evil Smedly Deadly and his poisonous plants, meeting some interesting characters along the way. A Deadly Poisons Trail will introduce you to terrifying plants, including the tree favoured by serial killers and the beans with the world's highest toxicity. Magical Mushroom workshops will take place on The Secluded Lawn each morning (11am-1pm) to help you find out more about fungi, and daily tours of the gardens revealing the darker side of plants will take place at noon (limited capacity – register with the guide 15 minutes beforehand). All this life-saving information is free with admission, so there'll be no excuses for plant-based risk-taking in future.