Posted 7/8/2015 22:13 (#4669130 - in reply to #4668920) Subject: RE: Johnson grass?
Kentucky
Roundup works best on Johnsongrass when sprayed in the boot stage for rhizome control. Seedling is okay any time. I would let it reach the boot stage then spray and repeat with the regrowth. That should leave mostly seedling pressure for next spring.
Johnson grass?
