Dennis from Myrtle Beach, Sc writes
SpeedZone Southern Herbicide is safe to use on centipede grass, however it will only control broadleaf weeds listed on the product label, not crabgrass or ryegrass. We recommend a pre-emergent herbicide for the best control of crabgrass. Dimension 2EW would be an excellent choice for pre-emergent control of these and many other weeds.
Answer last updated on: 04/13/2016