| Adaptive Seeds |
| Baker Creek Heirloom Seed Co. |
| Diane's Flower Seeds |
| High Mowing Organic Seeds |
| One Green World (Northwoods Nursery) |
| Pinetree Garden Seeds |
| Quail Seeds |
| Raintree Nursery |
| Resilient Seeds |
| Richters Herbs |
| Siskiyou Seeds |
| Southern Exposure Seed Exchange |
| Strictly Medicinal Seeds (formerly Horizon Herbs) |
| Territorial Seed Company |
| Terroir Seeds Home of Underwood Gardens |
| The Sample Seed Shop |
| TomatoFest |
| Uprising Seeds |
| Victory Seed Company |
