Horses usually have a good instinct for recognising which plants are poisonous to them and which are not. However, if a horse is particularly hungry, excited or distracted, this instinct may switch off and the horse eats poisonous plants.

 

The most important poisonous plants are

 

Yew tree

Foxglove

Tree of Life

Ivy

Laburnum

Rhododendron

Datura

Belladonna