If soil pH is above 6.5 on a sandy soil or 7.2 on a heavy soil, elemental sulfur mayhelp to lower pH and increase iron availability. Soil test information should be considered to determine the amount of sulfur to apply. Sulfur applications should be made in the spring and fall on heavy soils. Annual or less frequent applications may be adequate on sandy soils. Weed Control .
Weed control improves the appearance and reduces the mowing needs of centipedegrass lawns.
Winter weeds are particularly unsightly since they contrast so sharply with the dormant grass. Herbicides should be applied in the fall or winter before these weeds mature. Crabgrass and other summer annuals are most effectively controlled with preemerge herbicides applied in early spring before the weeds emerge. Products containing benefin, DCPA, bensulide or simazine can be effectively used for crabgrass control when applied according to label instructions.