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Home > Weeds > Crabgrass

Large Crabgrass—Digitaria sanguinalis

A grassy annual weed found in fields, lawns, and pastures; it tolerates both high temperatures and dry, compacted soils.

large crabgrass large crabgrass flowering crabgrass habit
Purplish or green with very hairy leaves and sheaths. Leaves are about ¼ inch wide and 2 to 6 inches long. Flower spikes radiate from the main stalk in 2 to 9 finger-like branches. Seed is produced on purplish seed heads from midsummer to fall. Grows in disturbed areas, weak or thin turf areas and in edges of lawns next to sidewalks and drives. When unmowed it may grow upright to a height of 2 feet.

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Identification and Control Information (each will open in a new window)
  • Crabgrass Control [PDF]—Cornell Cooperative Extension
  • Crabgrass—University of Maryland Extension, Home & Garden Information Center
More Information (each will open in a new window)


[Photos, left to right: Rebekah D. Wallace, University of Georgia,; Steve Dewey, Utah State University,; Richard Old, XID Services, Inc.,]

It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.