- ABI Alfalfa
- Agriseeds
- AgVenture, Inc.
- Albert Lea Seed House
- Allied Seed LLC
- America's Alfalfa
- Ampac Seed Company
- Andrews Seed Company
- Animal Management Systems
- Arrow Seed Co., Inc.
- Asgrow Seed Company
- Bailey Seed
- Bamert Seed Company
- Barenbrug China
- Barenbrug France
- Barenbrug Holland
- Barenbrug Holland BV
- Barenbrug Tuinprodukten
- Barenbrug UK LTD
- Barenbrug USA
- Bladerunner Farms, Inc
- Bo-Jac Seed Company
- Browning Seed, Inc.
- Brussels Agri Services
- Burlingham Seeds LLC
- Campbell Seed, Inc.
- Cargill Seeds
- Cargill Seeds -- Argentina
- Cargill Seeds -- Brazil
- Cargill Seeds -- Canada
- Cargill Seeds -- Chile
- Cargill Seeds -- France
- Cenex Harvest States
- Christie Farms
- Cimarron USA (Great Plains Research Company, Inc.)
- Cloutier Agra Seeds Inc.
- Corvallis Feed & Seed, Inc.
- Costal Turf, Inc.
- Cotswold
- Dairyland Seed Company Inc.,
- DEKALB Genetics Corp.
- Delta King Seed Company
- DLF International Seeds
- DLF Trifolium - Denmark
- East Texas Seed Company
- Forbes Seed & Grain Inc.
- FS Seeds
- Gamagrass Seed Co.
- Gardner Turfgrass, Inc.
- Garst Seed Company
- Golden Harvest
- Gooding Seed Co.
- Grassland Oregon
- Grassland West
- Greg Norman Turf Company
- Gromark, Inc.
- Hubbard Seed and Supply
- Hughes Hybrids, Inc
- InterLake Forage Seeds
- Ioka Farms Inc.
- Jacklin Seed Company
- Jonathan Green, Inc.
- Kamprath Seed Inc.
- Keith Seeds Pty Ltd
- Kellogg's Seed Service
- Landiseed International LTD
- Lebanon Turf Products
- LESCO, Inc.
- Lofts Seed, Co
- Lohse Mill, Inc.
- Mark Seed Company
- Mayer Seed
- Midwest Seed Genetics, Inc.
- Monterey Seed Co.
- Musgrave Enterprises
- Mycogen
- New Zealand Agriseeds Ltd
- North Pacific Group, Inc.
- North Star Seed Ltd.
- Novartis Seeds
- Oregon Trail Seeds, Inc.
- Oregon Wholesale Seed Company
- Oregro Seeds, Inc.
- Outsidepride.com
- Pacific Seeds Pty Ltd
- Pannar Seeds
- Parsons & Sons
- Patten Seed Company
- Pawnee Buttes Seed Inc.
- Pennington Seed, Inc.
- Pickseed
- Pickseed Canada
- Pickseed West, Inc.
- Pike Creek Turf, Inc
- Pioneer Hi-Bred International, Inc.
- ProSeed Inc
- Quality Seeds West
- Resource Seeds, Inc.
- Roberts Seed
- Round Butte Seed Growers
- S&S Seeds, Inc.
- Saddle Butte Ag
- Scotts
- Seed Quote
- Seed Research of Oregon
- SeedLand, Inc
- SeedQuest
- Sharp Bros. Seed Co.
- Sila Grow
- Silver Falls Seed Company
- Simplot
- Smith Seed Services
- Sod Solutions, Inc
- Southern States Cooperative, Inc.
- Southern Turf Nurseries of Georgia
- Stewart Seeds
- Stine Seed Co.
- Stone Seed Farms, Inc.
- Svalof Weibull
- Tatiara Seeds
- Teague Australia Pty Ltd.
- Tennessee Farmers Cooperative
- Texas A&M
- The Scotts Company
- Todd Valley Farms, Inc.
- Trelay Seeds
- Turf Merchants, Inc.
- Turf-Seed Inc.
- Turfgrass America
- United States Department of Agriculture
- University of California - Riverside
- University of Georgia, Dept. of Crop & Soil Science
- University of Mississippi
- Western Productions, Inc.
- Wyffels Hybrids