05/04/2026
Ever wondered why a horse can seem fine on one day of spring grazing, but at risk the next? The answer lies in the grass itself.
In the early morning, grass sugar levels are at their lowest; the plant has used stored energy overnight. By the afternoon, sunlight drives photosynthesis, and sugar levels can spike dramatically. Young, lush spring grass is even trickier: rapid growth plus changing sunlight and rainfall means sugar levels can swing from low to dangerously high in a matter of hours.
For laminitis-prone horses, these swings matter. Sudden spikes in blood glucose trigger insulin surges, which can stress the sensitive tissues in the hoof and spark laminitis episodes. It’s not just about what your horse eats, but when and under what conditions the grass grows.
What you can do: Monitor your field, watch the weather, and consider timing and duration of grazing. Understanding these natural sugar fluctuations is one of the most effective ways to protect hoof health!