The Beautiful Fall Foliage  at The Mustard Seed Farm


Miniature horses, big benefits at Mustard Seed Farm in Foster

By MELANIE THIBEAULT, Valley Breeze Staff Writer

FOSTER – Nestled down a dirt driveway off Plainfield Pike in Foster is a big, red barn that has an even bigger mission to help people grow and learn, face challenges, and celebrate diversity with a little help from horses.

The Mustard Seed Farm, a nonprofit organization located at Red Rock Farm at 189 Plainfield Pike, was founded in Rhode Island a year and a half ago by Peggy Trimmer, a licensed foster care trainer and equine therapist who moved to Rhode Island from Ohio.

As both a clinical and non-clinical equestrian center, Mustard Seed mainly offers equine-assisted psychotherapy and equine-assisted growth and learning programs for children and adults, Trimmer said.

Trimmer, who grew up with horses and began a career in social work in 1990, said she thinks that equine therapy is a great way to help people understand more about themselves and one another.

“It’s powerful, it’s moving,” she said. “It’s the greatest thing I’ve ever seen.”

Her beloved horse, Heart’s Desire, nicknamed Dez, passed away in 2011 and inspired the program……..FULL ARTICLE

 The Mustard Seed Farm Services

  • Equine Assisted Psychotherapy (EAP)
  • Equine Assisted Growth and Learning (EAL)
  • Riding programs
  • Individual and family psychotherapy
  • Group counseling
  • Group workshops
  • School visits
  • Seeds of Courage
The Mustard Seed Farm
The Mustard Seed Farm

The Mustard Seed Farm Location

The Mustard Seed Farm at Red Rock Farm
189 Plainfield Pike mobilelogo
Foster, Rhode Island  02825


From Providence:
Take US-6 West/Route 10
Keep Right to take US-6 West
Merge onto I-295 South via the exit on the Left toward Warwick
Merge onto Plainfield Pike/RI-14 via Exit 4 (go approx. 13.7mi.)
Turn Right at blinking light to stay on Plainfield Pike/Route 14
End at 189 Plainfield Pike

Features Include:

  • Large Indoor Arena
  • Two outdoor arenas
  • Beautiful park setting with Old “New England” stone walls
  • Large grassy pastures and paddocks for the horses to run and play
  • Cross country course
  • 20 stall barn
Indoor Riding Arena
TMSF at RED Rock1
TMSF at Red Rock 2
Stables & Indoor Arena
Indoor Riding Arena2
farm photo

Please visit Our Services page for more information about the programs we offer.