The following is alist of official U.S. state grasses.
| State | State grass | Scientific name | Image | Year adopted |
|---|---|---|---|---|
| California | Purple needlegrass | Nassella pulchra | 2004[1] | |
| Colorado | Blue grama | Bouteloua gracilis | 1987[2] | |
| Illinois | Big bluestem (state prairie grass) | Andropogon gerardii | 1989[3] | |
| Kansas | Little bluestem | Schizachyrium scoparium (Andropogon scoparius) | 2010[4] | |
| Minnesota | Wild rice (state grain) | Zizania aquatica | 1977[5] | |
| Missouri | Big bluestem | Andropogon gerardii | 2007[6] | |
| Montana | Bluebunch wheatgrass | Agropyron spicatum | 1973[7] | |
| Nebraska | Little bluestem | Schizachyrium scoparium (Andropogon scoparius) | 1969[8] | |
| Nevada | Indian ricegrass | Oryzopsis hymenoides | 1977[9] | |
| New Mexico | Blue grama | Bouteloua gracilis | [10] | |
| North Dakota | Western wheatgrass | Pascopyrum smithii (Agropyron smithii) | [11] | |
| Oklahoma | Indian grass | Sorghastrum nutans | 1972[12] | |
| South Carolina | Indian grass | Sorghastrum nutans | 2001[13] | |
| South Dakota | Western wheatgrass | Agropyron smithii | 1970[14] | |
| Texas | Sideoats grama | Bouteloua curtipendula | 1971[15] | |
| Utah | Indian ricegrass | Oryzopsis hymenoides | 1990[16] | |
| Washington | Bluebunch wheatgrass | Agropyron spicatum | 1989[17] | |
| Wisconsin | Corn (state grain) | Zea mays | 1989[18] | |
| Wyoming | Western wheatgrass | Agropyron smithii | 2007[19] |