ProHart Seed Stock
Family owned and operated for over a century | Pueblo, CO
FOR SALE
Breeding Bulls Available via Private Treaty
Fertility & Trich Tested, Ready to Work
Every February, ProHart sells yearlings as a cooperative member of the Pot of Gold Sale. We hold back the best of our late spring and summer bull calves so they have time to mature and we’re able to offer them via private treaty.
Upcoming Bull Sale
Pot of Gold | Montrose, CO
Last Friday in February, 2026 | Noon MST
ProHart Seed Stock is a cooperative member of the Pot of Gold Sale which sells 100 Purebred & Balancer Bulls every February out of Montrose, CO. Next year’s sale is Friday, February 27th, 2026. We also sell bulls and females by private treaty from the ranch in Pueblo, CO.
• Ranch History •
ProHart Seed Stock strives to provide quality purebred Gelbvieh genetics to beef producers looking to improve their yield in the pasture and on the rail. The Hartman family has been involved in the cattle industry for more than a century. However, in the late eighties, Gregg Hartman was introduced to Gelbvieh cattle and quickly saw the advantage of the breed. Since then, the ProHart operation has focused on producing stout bulls that have found success in operations across the United States.
In 2021, ProHart Ol’ Glory was selected as the Breeders’ Choice Gelbvieh Bull Futurity Champion and on January 1st, ProHart Kryptonite brought home the honors again, selected as the 2023 Breeders’ Choice Gelbvieh Bull Futurity Champion. We’re excited to see the calf crop these two yield in breeder members’ herds.
ProHart Seed Stock is a cooperative member of the Pot of Gold Sale which sells 100 Purebred & Balancer Bulls every February out of Montrose, CO. Next year’s sale is Friday, February 27th, 2026. We also sell bulls and females by private treaty from the ranch in Pueblo, CO.