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Old 11-27-2012, 08:45 PM
greendoctor greendoctor is online now
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Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,860
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?.
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