Extension > Garden > Diagnose a problem > Is this plant a weed? > Grass > Large Crabgrass
Large Crabgrass
Digitaria sanguinalis (L.) Scpo.
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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
