Post Emergent For Seville St. Augustine

Brad – posted 13 March 2009 04:48

I e-mailed Ortho and they said that Weed B Gon For Southern Lawns (I’m in North Florida) should not be used on improved varieties of St. Augsustine such as Seville, Floratam, etc. Does anyone know of a readily available post emergent (liquid or granular) that can safely be used on Seville St. Augstine to kill various weeds such as clover, etc.?

Almaroad – posted 14 March 2009 09:49

Brad: You have several choices: Image is great–HOWEVER IT MUST BE USED DURING THE ACTIVE GROWING SEASON. Any dormant use will kill the grass. Another choice is Atrazine. However Fl. limits the use to .75oz/1000 sq.ft. of grass. That Weed-B-Gone stuff has 2-4D in it and not good for your grass. The best way to control those weeds is the use of a Pre-Emergent herbicide mixed in with your fertilize. A good blend would be 15-0-15 with Dimension. Check with you local John Deere/Lesco for a combination. 15-2-15 with Ronstar is another great one. The last number is potassium sulfate, which the grass likes and will help control the pH of the highly alkaline soil. Ronstar is your pre-emergent herbicide. See:http://www.lesco.com/?PageID=27&ItemNumber=062408