legacy formulation systems
High-integrity herbal architecture rooted in tradition and refined through decades of practice.
Most herbal blends are assembled.
Ours are Architected.
Each jar represents hands-on experience, architected formulation, and results earned in real barns — not marketing rooms.
We do not follow trends.
We preserve the discipline of true herbal formulation.
Plants are respected.
Systems are designed.
Horses are supported as whole beings.
Every scoop reflects a formulation philosophy built for function — supporting performance while safeguarding the horse’s long-term structural and biological integrity.
This is not simply a jar on a shelf.
It is participation in a living formulation philosophy — designed to uphold performance while preserving the horse’s structural and biological integrity.
THE STEWART of WEATHERLY HOUSE
Donna Weatherly stands at the head of Weatherly House — founder of Spirit Horse Herbs and architect of its formulation systems. Her work is grounded in decades of disciplined, hands-on equine practice and shaped by a deep respect for both horse and plant.
From barn to arena, her philosophy has been refined through observation, application, and results earned in real-world settings. The House comes first. The systems are built to last.
Participate in the Legacy
Whether you’re exploring a signature system or stepping deeper into our discipline, every selection supports horses as whole beings and aligns with a living formulation philosophy.
"For over 15 years, Spirit Horse Herbs has remained part of my conditioning program.
Formulas that are both effective and willingly consumed make all the difference in performance management.
Lung Shield is used daily as preventative support in my barrel horses.
Cool Focus is incorporated for high-energy horses, with adjusted support on competition days to maintain clarity and steadiness.
When something proves its value, it earns its place. These formulations have earned theirs.”
— Rusty Rae Quam
Barrel Racing Professional
