Posted 10/11/2009 22:39 (#881194 - in reply to #881087) Subject: RE: Roundup on quack after frost
Rivers, MB
Our experience with quackgrass is that once you get a hard killing frost (20's would do it), the grass shuts down and its pointless to spray. Thistles and some winter annual weeds may be sprayable but any grass is done from our experience.
Roundup on quack after frost
