Our Farm

GS3 Quality Seed Inc. is owned by Garth and Susan Mulkey. They are fourth-generation seed farmers in the Willamette Valley of Oregon and have been growing, conditioning and marketing seeds at the same location since 1966. As dedicated seed producers, they are always focused on seed purity and quality, combined with proven genetics.

Garth and Susan have been no-till farming for 23 years and know firsthand the benefits of planting radishes and other cover crops. Even in seed production fields, radishes provide the same great benefits as they do for row-crop producers.



Generations of Agricultural Excellence

Established in 1957, GMFI began as a small family farm, owned by Gylan Mulkey and operated with his oldest son, Garth Mulkey.

Together they integrated no-till farming practices and cover cropping.

Now, Garth has expanded the farm and developed GS3 Quality Seed. He is currently working with his wife and youngest daughter to continue building the family legacy.

We pride ourselves in being innovative and dedicated to the growth and development of new farming practices.

logo png (1).png

13535 DeArmond Rd

Monmouth, OR 97361​

Phone: 1-855-RADISH1 (855-723-4741)​

  • Black Facebook Icon
  • Black Instagram Icon

© 2019 by GS3 Quality Seed.
Proudly created with