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Extension > Garden > Diagnose a problem > Is this plant a weed? > Grass > Large Crabgrass

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Large Crabgrass

Digitaria sanguinalis (L.) Scpo.

  • Image: broadleaf Plantain
  • Image: broadleaf Plantain
  • Image: broadleaf Plantain
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Found in:

  • Lawns and landscape beds

Characteristics:

  • Annual grass that grows best during warm weather (summer)
  • Broad, flat growing habit when young; upright to 3’ when older
  • Older leaves and sheaths turn dark red to maroon in color
  • Leaf blade is flat with prominent midrib; hairy on both surfaces
  • Flower head consists of 7-10 whorled finger-like spikelets
  • Roots are fibrous; no underground stems (rhizomes) produced

Significance

  • Maintain minimum 2 1/2 - 3” mowing height and good turfgrass density
  • Common in areas next to curbs, driveways and sidewalks where other lawn grasses do poorly

Plants that look similar:

More information and control options for Large Crabgrass...

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