Quick Answer

Only in moderation. Horses can eat potatoes, but only when cooked, because raw potatoes contain solanine, a glycoalkaloid that is toxic to horses. Feeding cooked potatoes as an occasional treat (no more than 1-2 small potatoes per week) is safe, but they should never replace hay or pasture. Always remove green parts or sprouts, as these concentrate solanine. ## Is Potatoes Safe for Horses?
Potatoes belong to the nightshade family and produce solanine, a natural toxin that can cause colic, diarrhea, and neurological symptoms in horses. Cooking reduces solanine significantly, but does not eliminate it entirely. Thus, only cooked potatoes are considered safe, and only in small amounts. Horses are herbivores with a digestive system designed for high-fiber forage; starchy treats like potatoes can disrupt gut bacteria if overfed. ## Benefits
– Energy source: Potatoes provide carbohydrates for quick energy, useful for working horses in small quantities.
– Palatability: Many horses enjoy the taste, making potatoes a useful hidden-medicine delivery treat.
– Vitamins and minerals: Potatoes offer vitamin C, B6, potassium, and magnesium, though horses can obtain these from their regular diet.
– Variety: Adding a small amount of a novel food can prevent boredom in confined horses. ## Risks and Precautions
– Solanine poisoning: Raw, green, or sprouted potatoes can cause drooling, colic, diarrhea, dilated pupils, weakness, and even paralysis.
– Starch overload: Horses have limited ability to digest starch; excess can lead to colic, laminitis, or hindgut acidosis.
– Choking hazard: Large chunks of raw potato can lodge in the esophagus. Always cut into small, manageable pieces.
– Weight gain: Potatoes are calorie-dense; limit in easy keepers or horses prone to obesity.
– Mold risk: Stored potatoes may develop molds that produce mycotoxins; always inspect before feeding. ## How to Feed It Safely
Portion: No more than 1-2 small (golf-ball-sized) potatoes per week for a 1,000 lb horse. Frequency: Once a week as a treat. Preparation: Wash thoroughly, remove any eyes or green skin, boil or bake until soft (no seasonings, no butter or salt). Cool completely and cut into bite-sized cubes. Never feed raw potatoes, peels, chips, or fries. Always introduce slowly and observe for any adverse reactions. ## Bottom Line
Potatoes can be a safe, occasional treat for horses only when cooked and fed in strict moderation. The primary risk is solanine toxicity from raw or damaged potatoes. As with any treat, consult your veterinarian before introducing new foods, especially for horses with metabolic conditions or a history of colic. A balanced diet of quality hay, pasture, and a fortified grain mix remains the foundation of equine health.

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What you need to know

Raw potatoes are best kept away from horses. They belong to the nightshade family, and green, sprouting or raw potatoes contain solanine, a toxin that can cause digestive upset and more serious problems in larger amounts. The hard, round shape of a whole potato is also a genuine choking hazard, which is another reason to leave them out of the feed bucket.

Even cooked potato offers little nutritional value for horses and is high in starch, which can disturb the hindgut and contribute to issues in animals prone to laminitis. There are far safer treats available, so most owners simply avoid potatoes entirely. If your horse accidentally eats raw or green potato and shows signs of colic, drooling or distress, contact your vet promptly for advice.