- Farmer Seed & Nursery Co. (8)
- Griswold, Robert S., Seed & Floral (8)
- Lou S. Darling Seed Company (8)
- Redouté, Pierre Joseph (8)
- Trew, Christoph Jakob (8)
- Cole's Seed Store (7)
- Fairbury Nurseries (7)
- Loebs, J. L., Seed Co. (7)
- McFarland, Terry (7)
- S.L. Fuller & Co (7)
- Archias' Seed Store Corp. (6)
- Brockman, Wendy (6)
- Kohl, F.G. (6)
- Kunderd, A. E. (Kunderd Gladioli) (6)
- St. Louis Seed Co. (6)
- Wedge Nursery (6)
- Baldwin Nursery (5)
- Dakota Improved Seed Co. (5)
- Earl Ferris Nursery (5)
- Emmons & Co. (5)
