Bluebunch wheatgrass photo © Sarai on Flickr (used by permission).
Official State Grass of Washington
Washington designated bluebunch wheatgrass (Pseudoroegneria spicate (formerly Agropyron spicatum) ) as the official state grass in 1989. All State Grasses & Plants - All State Flowers
Found in eastern Washington, bluebunch wheatgrass was a benefit to Washington's pioneer farmers and continues to play a major role in the state's agriculture industry. Although many Washington state symbols are readily identifiable with the western part of the state, bluebunch wheatgrass is a symbol that's unique to eastern Washington.