We feed our miniature horses, Purina Mini Horse feed, twice a day along with some grass hay which we grow here on our farm and is 100% organic. They are given turn out time daily to exercise and play with their friends, but we don’t leave them out on grass long since minis have a tendency to overeat and founder from too much grass. They need access to fresh water at all times.
We have our minis hooves trimmed every 6 – 12 weeks, depending upon how quickly they grow. We have some minis that need their hooves trimmed every 6 weeks, most need it around 8 weeks, and a few that can go a little longer.
Please make sure you have a vet who has experience with miniature horses! He or she can help you with vaccines and provide guidance on worming schedules based on the area in which you live. Having a good vet’s phone number on hand is a good practice, just in case you might need help. Horses need to have their teeth "floated" regularly (yearly) to ensure they can eat their food properly and don't have any sharp points. Your vet or an equine dentist can provide this service.
We keep our minis in our barn in stalls overnight for safety. It’s important that your mini has a safe place to sleep and get out of the elements. If you keep your mini in a stall, make sure that you have a stall gate that is “mini” friendly so he or she can see out and be able to view other minis or horses. You can use a 4' "sheep" panel to convert a regular sized horse stall opening for a mini.
We recommend the book “The Big Book of Miniature Horses”, by Kendra Gale. This is a great reference book for mini horse care! It has illustrated pictures and help on many topics that are relevant to owning a miniature horse. Please pick up a copy and have a read! ~$18 on Amazon.