| Naics index | Naics index description |
|---|---|
| 111998 | Clover seed farming |
| 111998 | Crimson cloves seed farming |
| 111998 | Fescue seed farming |
| 111998 | General combination crop farming (except fruit and nut combinations, oilseed and grain, vegetable) |
| 111998 | Grass seed farming |
| 111998 | Guar farming |
| 111998 | Hay seed farming |
| 111998 | Hemp, grown in an open field |
| 111998 | Herb farming, open field |
| 111998 | Hop farming |