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Old 03-05-2013, 12:24 PM
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RigglePLC RigglePLC is online now
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Join Date: Jul 2006
Location: Grand Rapids MI
Posts: 10,751
This source says it is fine on most warm-season grasses, including st Augustine.
"Last week, I found another weed and feed available to homeowners, a 17-0-7 fertilizer from Lesco called LockUp, with the active ingredient penoxsulam. It gives post-emergence weed control. The great thing about it is that it is labeled for all four warm season grasses, and it can be applied year-round (except for dormant centipede) to a wet or dry lawn."

Last edited by RigglePLC; 03-05-2013 at 12:25 PM. Reason: link
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