Will Sedgehammer damage my St Augustine grass if I spot treat it to get rid of the nutsedge?

It is safe to spray on this type of St. Augustine grass: St. Augustine grass  Stenotaphrum secundadatum.  I know there is another variety in Florida, so you want to be sure and check this out.  This is a very safe and gentle approach to getting rid of nutsedge, and you may find it is safe for all types of St. Augustine grass.