| Al Par One Source | | (989) 661-7850 | Shiawassee |
| Auto Control a division of Kerkstra Mechanical, LLC | | (616) 532-6100 | Kent |
| BASF | | (937) 492-8597 | |
| BFG Supply Co | (800) 883-0234 | (800) 883-0234 | |
| Braun Horticulture | (888) 732-7286 | (716) 282-6101 | 0 |
| Cannonsburg Wood Products, Inc. | (800) 866-4840 | (616) 866-4459 | Kent |
| Cherokee Manufacturing | (800) 798-9473 | (616) 392-1340 | Allegan |
| Consumers Concrete Corporation | | (269) 342-0136 | Kalamazoo |
| Dayton Bag & Burlap | (800) 543-3400 | (800) 585-2247 | |
| EasyPro Pond Products | (800) 448-3873 | (231) 834-7720 | Newaygo |
| Farber Bag & Supply Co. | (800) 553-9068 | (563) 583-6304 | |
| Grasshopper Company | | (620) 345-8621 | |
| Great Lakes Nursery Soils, Inc. | | (231) 788-2770 | Muskegon |
| Great Western Bag Co. | (800) 462-6707 | (630) 231-4205 | 0 |
| Gummer Peat Company, Inc. | (800) 652-6631 | (989) 352-6631 | Mecosta |
| Hammond Farms Landscape Supply, Inc. | | (517) 646-8698 | Eaton |
| Harrell's | | (740) 644-9020 | |
| JDE Equipment | | (616) 530-2000 | Kent |
| John Henry Co. | (800) 748-0517 | (800) 748-0517 | Ingham |
| King-Hughes Fasteners | (800) 779-3972 | (810) 721-0300 | Lapeer |
| Landmark Plastic Corporation | (800) 242-1183 | (330) 212-4046 | |
| Michigan Wire Cloth | (888) 464-9473 | (989) 224-4430 | Clinton |
| Michigan Wood Fibers LLC | (800) 81-MULCH | (616) 875-2241 | Ottawa |
| Monroe Truck Equipment | | (810) 238-4603 | Genesee |
| Myers Industries Lawn and Garden Group | (800) 225-7712 | (440) 632-0230 | |
| Oaks Concrete Products, Inc. | | (248) 684-5004 | Oakland |
| Old Castle APG Midwest | | (989) 631-0400 | Midland |
| P.J. Hebert, Inc. | (800) 726-1945 | (586) 726-1943 | Macomb |
| Permaloc Corporation | (800) 356-9660 | (616) 399-9600 | Ottawa |
| Profile Products, LLC | | (734) 777-3229 | |
| Santerra Stonecraft | (800) 771-0658 | (519) 944-7737 | |
| Scotts Co. (The) | | (517) 647-5810 | Ionia |
| Sullivan Corporation | (800) 878-1010 | (734) 237-5950 | Wayne |
| Twixwood Nursery | | (269) 471-7408 | Berrien |
| Unilock Michigan, Inc. | (800) 336-4056 | (248) 437-7037 | Livingston |
