Originally Posted by greendoctor
That I could not tell you. The closest to dormant turf I deal with is grass that has not had a full day's sun for over a week and temperatures below 80 in the day. I would be cautious because herbicide tolerance is based on grass growing out of any injury it might receive from an application. What kind of weeds are you targeting that are still around while the St Augustine is trying to go to sleep?.
I am trying to get rid of some wild violet. Was thinking about a mix of Dismiss & Metsulfuron, 4oz & .50 per acre rate. I realize I should have gotten it earlier but missed it.