The following is a list 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] |