Originally Posted by RAlmaroad
Gregory: You are doing things right--applying early and again during the growing season. So many times a one time attitude leads to most problems. Nearly all pre-em last only a couple of months at best. Re-applying before that time is up will result in good control of most problems thus eliminating any need for stronger measures. The general mindset is to apply at higher rate and hope for the best just will not work when the growing season for warm-seasoned grasses; could double that of cool season turf.
This is an area that is approx 25% St Aug. You don't think the Prodiamine will inhibit spreading? I thought you didn't use this particular pre.