Wintergrass killer is a selective herbicide and is safe to use on couch and buffalo lawns. ... Your only option here is to use a pre-emergent herbicide such as BOW AND ARROW or EMBARGO early in the season which will kill the seeds of the winter grass weed before they have a chance to germinate.

How do I get rid of winter grass?

You can get winter grass under control with Munns Professional Winter Grass Killer. It contains propyzamide, which is both a pre-emergent (prevents) and post emergent (kills) herbicide and works by binding with the soil and being taken up and killing new winter grass roots as the seeds germinate.

What weeds does bow and arrow kill?

Bow & Arrow Herbicide is a copy of Spearhead Selective Herbicide (Availabe in a 500ml pack). For the Control of various Broadleaf Weeds in Turf such as White Clover, Plantain, Capeweed, Cat's Ear, Bindii (Jo-Jo, Onejunga), Cudweed and Creeping oxalis.