Is the herb rosemary safe if consumed by horses?

No, rosemary should not be consumed by horses.

It does not matter if you are using fresh or dried rosemary, both can be toxic to horses. When rosemary is consumed by horses, it can lead to serious health issues such as colic, diarrhea, and even death.

If you are considering giving your horse any type of herbal supplement, it is always important to consult with a veterinarian first to ensure it is safe and beneficial for your animals.