rough bluegrass

American  

noun

1. a grass, Poa trivialis, native to Eurasia and naturalized in North America, where it is used in mixtures for lawns and pasturage.

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Etymology

Origin of rough bluegrass

First recorded in 1920–25

Example Sentences

“Maybe you have a lawn full of difficult-to-control weeds like annual bluegrass or rough bluegrass and you want to start over,” said Alec Kowalewski, turfgrass specialist with the Oregon State University Extension Service.

From Seattle Times