An annual weed or, in warm climates, a short-lived perennial that grows in a mat-like, spreading habit. Reproduction is from seeds, but the spread of the plant is encouraged by its ability to root at the nodes where the stems contact the soil. A problem in turf and landscape, along roadsides and other disturbed sites, and in pastures and fields.
Physical removal of single plants is effective but relies on removal of all the stems. When found in turf most members of the sunflower family can be effectively controlled with a selective broadleaf herbicide. Prevention of seed germination can be accomplished with a pre-emergent herbicide. In turf it does best when turf is not mowed regularly.