How to Choose the Right Hay for Your Horse (Safety, Quality, and Health)

Last updated: January 13, 2026

By: Miles HenryFact Checked

When a new load of hay hits the barn, my first thought isn’t “How many bales did I get?”—it’s “Is this actually safe and appropriate for the horses I’m feeding?”

I remember opening a beautiful-looking bale one year with fine, soft stems and that sweet grassy smell. It looked perfect for my easy keepers… until one of them started packing on weight and getting foot-sore within a few weeks. That’s when it hit me: picking hay isn’t just about how it looks on the trailer or in the field, it’s about match-making the right hay to the right horse.

These days, whenever I look at a bale, the little voice in my head says, “Is this going to keep this horse healthy, or am I buying myself a colic or laminitis problem a month from now?” This guide walks through how I evaluate hay in real barns, where budget, storage, and mixed herds all come into play. This guide is written for everyday horse owners managing (backyard retirees to performance horses), not textbook theory.

What good hay is for a horse

For most horses, hay is the backbone of the diet—typically supplying 50–100% of their fiber needs when pasture is limited. But “good hay” isn’t one-size-fits-all. A bale that keeps an “easy keeper” healthy might starve a lactating mare, and the rich alfalfa that fuels a performance Thoroughbred can trigger laminitis in a metabolic pony.

Good horse hay should be clean (free from mold, dust, and trash) and appropriate in energy for the individual horse. Based on University Extension standards, an adult horse needs roughly 1.5–2% of its body weight in forage daily. For a standard 1,000lb horse, that means 15 to 20 pounds of hay per day when grass isn’t available.

Signs your hay choice isn’t working

Sometimes the hay looks fine in the bale, but your horse’s body tells a different story. In my experience, these are the five “red flag” patterns that mean your hay isn’t a good match:

• Digestive changes: Watch for new gas colic episodes or firm manure after a switch. Late-cut, stemmy hay is a primary risk factor for impaction colic.
• Respiratory irritation: If you notice coughing while eating or a dusty haze in the barn, the hay likely contains mold spores that can lead to chronic “heaves.”
• Weight & Topline Issues: If hard keepers are losing muscle or “topline” despite plenty of hay, the forage lacks the protein or digestible energy they need.
• The “Lami-Walk”: For horses with EMS or PPID, tender-footedness after a hay change is a critical sign that the sugar (NSC) levels are too high.
• Wasted Hay: If normally good eaters are picking through the flakes or leaving “broomstraw” behind, they are telling you the hay is over-mature and unpalatable.

Matching hay type to your horse

Not every horse in your barn needs the same hay. University of Florida Extension services stress starting with the class of horse, then selecting hay type and quality based on their unique metabolic needs.

• Easy Keepers / Overweight: Mature grass hay (timothy, orchardgrass) with low NSC (Non-Structural Carbohydrates). Avoid alfalfa or early legume cuts that pack on “crest” and can trigger laminitis.
• Performance / Broodmares: Grass-alfalfa mix or straight high-quality grass hay. Provides protein (12-16%) and digestible energy without excess starch.
• EMS / Laminitis-Prone: Tested low-NSC hay (target <10-12% total sugar + starch). If testing isn’t possible, soaking hay per Mad Barn guidelines can help leach out excess sugars.
• Seniors / Poor Teeth: Soft, leafy early-cut grass hay or soaked cubes. Avoid stemmy second/third cutting that is difficult to chew and often drops out of hay nets.
• Hard Keepers: Legume-grass mix (10-15% alfalfa) for higher calories and protein. Watch for “hay belly”—a sign of high fiber but low protein/digestibility.

When to test hay (and when you don’t need to)

Hay analysis typically costs $25–$50 per sample. While most barns don’t test every single load, it is worth every penny in these scenarios:

• Metabolic / EMS Horses: NSC testing is mandatory. Preventing one laminitis flare-up saves thousands in vet bills.
• New Supplier or Cutting: The same field can vary 20% in protein from first to second cutting.
• Performance Horses: Verifying energy/protein matches workload avoids “tying-up” episodes triggered by excess starch.
• Bulk Winter Buy: If you are buying 6+ months of hay, testing ensures your biggest expense is nutrient-dense.

You probably DON’T need to test if: You have a trusted local supplier, your horses are thriving visually, or you have low-risk pleasure horses on standard grass hay.

Pro move: When ordering a test, request an “Equine Profile.” Look closely at ADF (Acid Detergent Fiber); lower numbers mean the hay is more digestible. High NDF (Neutral Detergent Fiber) usually means the horse will feel “full” before they’ve eaten enough nutrients.

Explore Testing Options: National Forage Testing Association.

FAQs About the Best hay for horses

Final thoughts: Hay is your horse’s foundation

Hay selection separates casual owners from serious horsepeople. The 60-second inspection, matching hay to metabolism, and knowing your “call vet NOW” signs—these habits have saved me thousands in vet bills over 30+ years.

When problems hit, remember: hay logs + vet photos = 10X faster diagnosis. Your preparation directly correlates with your horse’s comfort and longevity.

What’s your biggest hay challenge? Is it finding consistent suppliers, managing EMS horses, or senior feeding? Drop a comment below—your real-barn solution might help another owner sleep better tonight.

Additional Reading

For more guidance on managing costs and maximizing value in horse care, check out:

• The Cost of Hay: Factors Affecting Price
• Thoroughbred Breeding Economics: Costs, Value, and ROI
• Feeding Performance Horses: Balancing Nutrition and Cost