- C. W. Dorr (1)
- C. W. Dorr & Co. (8)
- C. W. Stuart & Co. (2)
- C.G. Patten and Son (4)
- Caldwell Nurseries (1)
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- Campbell, Frank W. (1)
- Carley, Julie (3)
- Carpenter, Sam, Gardens (1)
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- Celery City Nurseries (3)
- Chas. J. Lindholm (1)
- Chas. M. Baumgarten Seed Co. (1)
- Chase Brothers Co. (1)
- Chase Brothers Company (3)
- Chase, Charles H. (1)
- Chesmore Seed Company (1)
- Chesmore Seed Store (1)
