Definition of blue oat grass
: a tufted, perennial, evergreen grass (Helictotrichon sempervirens) native to southwestern Europe that is grown as an ornamental for its thin, stiff, grayish-blue leaves and straw-colored, erect, panicled spikelets Glimmering blue oat grass makes perfect evergreen hemispheres of icy blue between the stonelike mounds of hebes.— Ann Lovejoy, Seattle Post-Intelligencer, 26 June 2003 Plants such as blue oat grass harmonize with the colors of the flower blossoms and add contrasting shape.— Susan Davis Price, Minnesota Monthly, June/July 2005
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Time Traveler for blue oat grass
The first known use of blue oat grass was in 1973
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