If you have isolated weed problems that are harder to treat, only use more herbicide in those areas — don't treat the whole lawn again. Annual bluegrass can spread quickly and can leave behind ...
PRE-EMERGENT HERBICIDE: Quali-Pro's Prodiamine 65 WDG provides pre-emergent grass and broadleaf weed control ... Golf Courses EFFECTIVE AGAINST: Annual bluegrass (Poa annua), Henbit, Knotweed ...
Do you have annual bluegrass? You'll need something else to control poa annua in your lawn and it only suppresses dallisgrass (Paspalum dilatatum), but doesn't kill it. Weeds can quickly reproduce ...