Quote:
Originally Posted by Grill Meister
Do no use RoundUp on lawn grass. It kills ALL vegetation....weeds, grass, any living plant. Don't do it!
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Pay attention to what the original quoted post said "
Roundup for Southern Lawns." It is a variation specifically meant for weed killing, and does not harm St. Augustine grass.
However, Atrazine is a much better choice, and is also safe for St. Augustine grass.