| Hefty Seed Company Headquarters - Baltic, SD | 47504 252nd Street | | Baltic | SD | 57003 | (605) 529-5412 | (605) 529-5485 |
| Hefty Seed Company - Gettysburg, SD | 414 North East St | | Gettysburg | SD | 57442 | (605) 765-2640 | |
| Hefty Seed Company - Huron, SD | 39780 US HWY 14 | | Huron | SD | 57350 | (605) 352-1765 | (605) 352-1773 |
| Hefty Seed Company - Roscoe, SD | 1388 336th Ave | P.O. BOX 321 | Roscoe | SD | 57471 | (605) 287-4750 | |
| Hefty Seed Company - Kimball, SD | 25005 SD HWY 45 | | Kimball | SD | 57355 | (605) 778-6762 | (605) 778-6768 |
| Hefty Seed Company - Watertown, SD | 17347 458th Avenue | | Watertown | SD | 57201 | (605) 886-5911 | (605) 886-6009 |
| Hefty Seed Company - Centerville, SD | 2210 State Street | | Centerville | SD | 57014 | (605) 563-2158 | (605) 563-2209 |
| Hefty Seed Company - Freeman, SD | 28019 US HWY 81 | | Freeman | SD | 57029 | (605) 925-7911 | (605) 925-7912 |
| Hefty Seed Company - Aberdeen, SD | 38352 US HWY 12 | | Aberdeen | SD | 57401 | (605) 226-2492 | (605) 226-4070 |
| Hefty Seed Company - Wilton, ND | 143 ND HWY 36 | P.O. BOX 218 | Wilton | ND | 58579 | (701) 652-5866 | (866) 332-4234 |
| Hefty Seed Company - Hurdsfield, ND | 119 W Main St | | Hurdsfield | ND | 58451 | (701) 962-3346 | (701) 962-3429 |
| Hefty Seed Company - Hillsboro, ND | 110 6th Street SW | | Hillsboro | ND | 58045 | (701) 636-3000 | (701) 636-3002 |
| Hefty Seed Company - Mohall, ND | 3588 Highway 5 Northwest | P.O. Box 55 | Mohall | ND | 58761 | (701) 756-7333 | |
| Hefty Seed Company - Jamestown, ND | 901 14th Avenue Southeast | | Jamestown | ND | 58401 | (701) 252-4220 | |
| Hefty Seed Company - Lisbon, ND | 701 Jackson Avenue West | | Lisbon | ND | 58054 | (701) 683-3044 | (701) 683-3045 |
| Hefty Seed Company - Pembina, ND | 15866 Highway 5 | | Pembina | ND | 58271 | (701) 454-6226 | (701) 454-6244 |
| Hefty Seed Company - Sidney, MT | 34752 County Road 119 | | Sidney | MT | 59270 | (406) 488-4338 | (406) 488-4363 |
| Hefty Seed Company - Great Falls, MT | 101 Vaughn South Frontage Road | | Great Falls | MT | 59404 | (406) 964-8836 | (406) 799-0170 |
| Hefty Seed Company - Bertrand, MO | 1400 N Hwy B | P.O. Box K | Bertrand | MO | 63823 | (573) 683-7600 | (573) 683-7902 |
| Hefty Seed Company - LeRoy, MN | 191 N Industrial Street | | LeRoy | MN | 55951 | (507) 324-5252 | (507) 324-5253 |
| Hefty Seed Company - Janesville, MN | 706 East 2nd Street | | Janesville | MN | 56043 | (507) 231-6144 | (507) 237-6145 |
| Hefty Seed Company - Ulen, MN | 24972 160th Avenue | | Ulen | MN | 56585 | (218) 596-8890 | |
| Hefty Seed Company - Breckenridge, MN | 3549 200th Avenue | | Breckenridge | MN | 56520 | (218) 643-2262 | (218) 643-5755 |
| Hefty Seed Company - Olivia, MN | 2235 West Lincoln Ave | | Olivia | MN | 56277 | (320) 523-1329 | (320) 523-1399 |
| Hefty Seed Company - Fairmont, MN | 1025 Fairview Avenue | | Fairmont | MN | 56031 | (507) 235-3422 | (507) 235-3442 |
| Hefty Seed Company - Marshall, MN | 2954 271st Avenue | | Marshall | MN | 56258 | (507) 532-3685 | (507) 532-3695 |
| Hefty Seed Company - Winthrop, MN | 28112 581st Avenue | | Winthrop | MN | 55396 | (507) 647-3334 | (507) 647-3336 |
| Hefty Seed Company - Hancock, MN | 24909 County Rd 1 | | Hancock | MN | 56244 | (320) 392-5394 | (320) 392-5397 |
| Hefty Seed Company - Buhl, ID | 1634 East 3900 Road North | | Buhl | ID | 83316 | (208) 731-8613 | |
| Hefty Seed Company - Nezperce, ID | 2104 Cemetery Road | | Nezperce | ID | 84543 | (208) 937-9642 | (208) 937-2564 |
| Hefty Seed Company - Sheldon, IA | 1209 Western Avenue | | Sheldon | IA | 51201 | (712) 324-7270 | (712) 324-7187 |
| Hefty Seed Company - Quincy, WA | 16287 Road 2 Northwest | | Quincy | WA | 98848 | (509) 797-5161 | |
| Hefty Seed Company - Farmington, WA | 10302 Tekoa Farmington Road | | Farmington | WA | 99128 | (509) 287-2900 | |
