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
Purplish or green with very hairy leaves and sheaths. Leaves are about ¼ inch wide and 2 to 6 inches long.

large crabgrass flowering
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.

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