Common Name: sandbur
Species: Cenchrus incertus M.A. Curtis
Bayer Code: CCHIN

Sandbur can be a very troublesome weed in warm-season turf species. It is easily identified by the seedhead, which is a spike of tiny burs that can hurt when touched. This weed thrives in sandy soils, but can be controlled with certain herbicides when in the seedling stage.
sandbur seedheads
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sandbur seedhead
Seedhead / Flower spikeburs that occur all along a spike-like seedhead
Vernation Type foldedleaves folded in the bud
Ligule Type fringe of hairsfringe of hairs 0.04 inches (1 mm) long, with 0.08 inch (2 mm) long hairs on each side
Growth Season / Life Cycle summer annual weed OR perennial weed 
Auricle Type absent 
Leaf Blade Tip Shape sharp-pointedthin, flat, usually not hairy
Leaf Blade Width  0.08 - 0.24 inches (2 - 6 mm) wide
Stolon Presence absentnone, but stems decumbent
Rhizome Presence presentvery short
Collar Type divideddivided by midrib, distinct
Sheath Margin   
Sheath Type flattenedsheath is usually not hairy