Sandbur is a summer annual grass. Sandbur forms clumps due to lack of rhizomes and stolons, but can root at nodes on the stems if they touch the ground. The leaves are folded in the bud, the ligule is a fringe of hairs, and auricles are absent. The plant turns brown in winter. The seedhead of sandbur consists of a spike like raceme containing spined or burred seeds. The seeds catch on clothing or animal fur. Sandbur is commonly found in the Midwest and Southeastern United States.
Sandbur is a summer annual that is most competitive in thinner turf. To limit the spread of sandbur, keep the turf under a good fertility program. Sandbur is most aggressive in lighter sandy soils. Any cultural practices that encourage more of competitive growth of the desired turf will prevent the spread of sandbur.
Make your post-emergence herbicide application to sandbur that is actively growing and in the seedling to flower stage of growth.