Poisonous Foods and Plants to Horses: What Every Owner Should Know


As horse owners, it is important to know which foods and plants are toxic to horses to prevent them from accidentally ingesting them. While horses are generally selective in their grazing, they can still be curious and nibble on plants that are harmful to them. Additionally, some common human foods can also be dangerous to horses. In this article, we will discuss some of the most poisonous foods and plants to horses and how to prevent your horse from eating them.

The following are some of the most common plants that are poisonous to horses:

  • Poison hemlock
  • Nightshade
  • Yew
  • Red maple
  • Black walnut
  • Buttercup
  • Rhododendron
  • Azalea

These plants contain toxins that can cause a range of symptoms in horses, from mild gastrointestinal upset to neurological issues and even death. Symptoms of plant poisoning can include colic, diarrhea, difficulty breathing, seizures, and collapse. If you suspect that your horse has ingested a toxic plant, contact your veterinarian immediately.

In addition to plants, there are some foods that are poisonous to horses, including:

  • Chocolate
  • Avocado
  • Onions and garlic
  • Tomato leaves
  • Persimmons
  • Potatoes
  • Rhubarb

These foods can contain compounds that are toxic to horses, such as theobromine in chocolate, which can cause cardiac issues, and persin in avocados, which can cause respiratory distress. Symptoms of food poisoning in horses can include lethargy, difficulty breathing, colic, and collapse.

To prevent your horse from ingesting poisonous plants or foods, it is important to practice good pasture management and be aware of what your horse has access to. Remove any toxic plants from your horse’s pasture and be mindful of what you feed your horse, avoiding any foods that are known to be toxic.

It is important for horse owners to be aware of the plants and foods that are poisonous to horses. By taking the necessary precautions and practicing good pasture management, you can help keep your horse safe and healthy. If you suspect that your horse has ingested a toxic plant or food, contact your veterinarian immediately.



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