Poisonous plants: Potatoes


When potatoes are green and sprouting, they contain high amounts of the poison solanine.

Potatoe poisoning is rare in humans because boiling, roasting or frying destroys solanine.

If a horse eats a green potato, it can cause the following

  • excitability followed by depression
  • decreased heart and respiratory rate
  • gastric problems such as colic
  • co-ordination problems and muscle weakness
  • convulsions
  • large amounts may cause death from cardiac arrest