crabgrass

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Related to crab grass: quack grass, summer grass

crabgrass,

name for any of several grassgrass,
any plant of the family Gramineae, an important and widely distributed group of vascular plants, having an extraordinary range of adaptation. Numbering approximately 600 genera and 9,000 species, the grasses form the climax vegetation (see ecology) in great areas of low
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 species of the genera Digitaria, Eleusine, and Panicum, especially the species D. sanguinalis. Crabgrass is a common lawn weed, especially in the S and E United States. The grass has branching stems that may reach a length of 3 ft (91 cm) and flowers borne on purple spikes. It is sometimes cut for hay.
References in periodicals archive ?
Even though he was pleased with the yield, Wayne was concerned about the crab grass that was coming up with the corn.
Once the corn was harvested, Wayne turned the cows onto the experimental plot, hoping they would clean up the crab grass.
In her northwest Washington neighborhood where neglected children in hand-me-downs are growing up as wild as crab grass, Renee is learning how to play a dangerous game of survival -- a game that one day prompted her to reach for a knife instead of a Barbie doll.
Tests prove that crab grass prospers in low grass, because more sun reaches the soil to germinate crab-grass seeds.
She may have flower beds surrounding the gazebo she installed last year, or maybe she is a lawn care "newbie" who has finally mastered the crab grass or learned how to tune-up her first lawn mower.
True, you have your occasional rose among the blooming idiots and crab grass, but rarely do you have the likes of Lily Allen.