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Crowfootgrass

Description

Crowfootgrass is an annual grassy weed of turf that roots at the nodes. It is characterized by its unique seedhead of 5 or more spikelets that radiate outwards, resembling a crow's foot.

Cultural Control

Summer annual grass weeds germinate from late March through July depending on location. They flower in summer and either die in the fall or are killed by frost. These weeds invade thin turf quite easily, so a year round turf management program is important to help prevent these weeds from becoming a problem. Winter weed control is especially important because when these weeds begin to die out in the spring, thin turf occurs where the weeds were located. As the turfgrass begins to grow in the spring, so do summer annual grass weeds. Seedlings will fill in the bare, or thin turf areas before the turfgrass can recover in the spring.

Presentations

Publications

Species Data

Seedhead/Flower

raceme; 2-5 fingers radiating from central point at stem tip, tips of spikelets resemble claws

backseedhead
backseedhead
backseedhead
p1130048
p1130048
p1130048
seedhead2
seedhead2
seedhead2
seedhead3
seedhead3
seedhead3
weed
weed
weed
Vernation type

leaves rolled in the bud

crowfootgrass
crowfootgrass
crowfootgrass
p1010707
p1010707
p1010707
vernation
vernation
vernation
weed2
weed2
weed2
Ligule Type

membranous with fringe of hairs

Growth Season/Life Cycle

summer annual weed

autopsy
autopsy
autopsy
Auricle type

absent

auricle
auricle
auricle
crowfootgrass
crowfootgrass
crowfootgrass
weed2
weed2
weed2
Leaf blade tip shape

row of hairs extending outward from the margin on lower portion of leaf blade

leaf
leaf
leaf
leaftip
leaftip
leaftip
Leaf blade width

0.08 - 0.35 inches (2 - 9 mm) wide

leaf
leaf
leaf
leaftip
leaftip
leaftip
Stolon Presence

absent

Rhizome Presence

absent

Collar Type

continuous

collar
collar
collar
collar2
collar2
collar2
haironleafedges
haironleafedges
haironleafedges
p1010707
p1010707
p1010707
vernation
vernation
vernation
weed2
weed2
weed2
Sheath Margin

open;

collar2
collar2
collar2
crowfootgrass
crowfootgrass
crowfootgrass
sheath
sheath
sheath
Sheath Type

flattened