crabgrass, southern

COMMON NAME: Crabgrass, southern
SCIENTIFIC NAME: Digitaria ciliaris
FAMILY: Poaceae
LIFECYCLE: Annual
FEATURES: Growth habit: Prostrate growth habit, rooting at the nodes; Stem: Rounded and rooting at the
nodes. Stems/leaf sheath pubescent.; Leaf: Leaf 3 to 6 inches in length, pubescent on lower 1/3.
Leaf sheath pubescent.; Collar: Ligule membranous, with jagged edge, not completely encompassing
stem. ; Inflorescence: Three to six racemes terminating a stem. Normally branching along the top 2
inches of the inflorescence stem.
DESCRIPTION: Almost indistinguishable from large crabgrass. Large crabgrass (Digitaria sanguinalis) found more in
the transition zone and north. Southern crabgrass found more in the transition zone and south.
Southern crabgrass is a laterally (decumbent) growing summer annual grass. Heavy pubescence is the
primary characteristic distinguishing it from smooth crabgrass. Southern also roots at the nodes,
whereas smooth does not.

Broad View General

Broad View
General

Leaf Leaf sheath

Leaf
Leaf sheath

Leaf Leaf and sheath

Leaf
Leaf and sheath

Broad View Whole plant

Broad View
Whole plant