Stone Tree Ranch is a polo training and equestrian facility nestled in the hills of Calistoga in Northern Napa Valley. The ranch was founded from our passion for polo and our commitment to developing exceptional horses for the sport.

We breed polo horses in Argentina, where they are professionally trained and prepared for play. These horses are then made available for sale or lease to players competing at Wine Country Polo Club and El Dorado Polo Club.

Stone Tree Ranch provides professional one-on-one polo lessons, horse training, grooming, and full-service patron packages. Our packages can include instruction, trained polo horses, horse leasing, conditioning, grooming, and transportation. We handle the logistics so our patrons can simply arrive at Trione Field or El Dorado Polo Club and play.