Diamond R. Fertilizer was founded by the Roper family. The brand was used on their fruit boxes distinguishing themselves from other owners at the packinghouse. The family sold the fertilizer and agrichemical businesses to a group of growers/investors from Ft. Pierce. The company grew over the years becoming the largest full service agrichemical dealer in Florida. Assets include four bulk-blending plants, agrichemical storage facilities, a seed harvesting and processing division, and an analytical laboratory.
Company profile
Diamond R. Fertilizer Co., Inc.
| 2025 rank | 41 |
|---|---|
| Previous rank | 42 |
| Headquarters | Fort Pierce, FL |
| States served | 1 (FL) |
| Locations | 6 |
| Employees | 130 |
| Founded | 1943 |
| Organization type | Independent Local Dealership |
| 2025 revenue | $101–$200 million |
| Revenue by input | Crop protection 41% · Fertilizer 56% · Seed 3% · Custom application 0% |
| Agricultural Retailers Association member | No |
| Address | 4100 Glades Cut-off Rd. Fort Pierce, FL 34981 |
| Phone | 772-464-9300 |
| Website | diamond-r.com |
| Data year | 2025 |
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