Digitaria
crabgrass
2 species
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Digitaria ischaemumsmooth crabgrass
Distribution: Most of southern Canada, and all of the United States except the extreme southeast and southwest.
Habitat: Lawns, roadsides and wastland, usually where moist.
Origin: Introduced from Eurasia
Flowers: July - September
Digitaria sanguinalishairy crabgrass
Distribution: A weed in most of the United States.
Habitat: Lawns, gardens, and wasteland.
Origin: Introduced from Eurasia
Flowers: July - October