acclimate your horse to pasture


How to transition your horse to grass pasture!


If ever there was an article that had no easy answer, THIS IS IT. A horse plus pasture is such an individual program with many factors to consider, so I will absolutely preface this by saying a few things.


  • Talk to your veterinarian about transitioning to grass pasture. I have seen enough laminitis to know that grass pasture and laminitis are related. Finding out if your horse has a metabolic issue is critical BEFORE you let him eat all of the salad. Even if he has no outward signs of Cushing’s or Insulin Resistance.


  • Go slow and steady. Increasing the time allotted slowly over time is a good way to do things. Better for his digestion! Consider it similar to you starting out at the gym. Are you going to bench 300 on the first day? Nope – you need to work up to it.


  • When in doubt, use a muzzle! Even the picture-perfect healthy horse can benefit from a muzzle. Horses are known as eating geniuses that will scarf down all of the salad in a fixed amount to time. They KNOW how long their turnout is, and they can eat accordingly. Read this study about ponies and grazing here.


gray horse in greenguard muzzle on the grass

Horses quickly figure grazing muzzles out. This is the Greenguard Equine Muzzle.


Things to consider when transitioning your horse to grass.


  • Your vet is a great source of guidance when you consider the multitude of factors as you transition to grass.


  • What time of year is it? Laminitis tends to peak in spring and especially in the fall with pasture’s sugar fluctuations.


gray horse in far corner of green grass pasture

Salad for days.


  • How metabolically healthy is your horse? Cushing’s and Insulin Resistance warrant limited turnouts on grass pasture or none at all. Also, something to consider….. the metabolically compromised horse can inflict a lot of potential damage in one hour without a muzzle. But a few hours with a muzzle and he might be fine.


  • How is the barn schedule? If the only option is he goes out for 8 hours, with no exceptions, you may want to adjust your schedule to allow a gradual build-up. Muzzles help a great deal also.


  • How long has it been since he last ate all of the salad? Horses that are removed from pasture for a period of time may still need acclimation. At my barn, the weather is a huge factor in how much we limit or allow grazing. My first winter there, the weather was so wet and frozen that the pastures were downright dangerous. So, the horses were in dry lots for six weeks. The first day back on grass was for one hour, muzzles on. From then on, an hour or so at a time with muzzles, or smaller increments without muzzles.


  • How much time should you give him daily to build up? Your Vet can best help you here. In the spring, it might be 10 minutes of that thick lush stuff, then a few days later, 20 minutes, gradually increasing by 10-minute increments. In less risky times, it might be an hour at a time over the course of a few weeks.


  • Pay attention to the horse that is out on pasture all of the time. Yes, he’s used to it, but as the spring and fall bring dangers, his routine may need to be shortened or modified to balance the increased risk.


dry lot with a feed tub for slow feeder

Dry lots are fantastic, too.


  • Even the perfectly healthy, young, and fit horse can benefit from a muzzle. Muzzles are not cruel. They allow the horse to slow his eating roll, giving his GI system time to process the starches and sugars of grass over time. Part of the laminitis risk comes from how much a horse eats in what time period. For example – the horse that eats 15 lbs of grain during an escape mission, versus the horse that eats 15 pounds of grain over four meals in one day.


  • And to be perfectly frank here, we love to treat our horses with food. Many horses live happy and amazing lives without pasture, and many horses live happy and amazing lives without hay.


When getting your horse used to grass pasture, it’s definitely a case that warrants some individual attention and care. And when in doubt, perhaps go a bit slower and have your horse wear that grazing muzzle.


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Safety break-away halter for grazing muzzles.



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