Dithiopyr L is a pyridine-based herbicide that provides pre-emergence and early post-emergence control of crabgrass, and pre-emergence control of other annual grasses and broadleaf weeds in established lawns, commercial sod farms, non-cropland, industrial sites, ornamental turf (including golf course fairways, roughs, tee boxes), container-grown ornamentals, field-grown ornamentals, and landscape ornamentals.