Glyphosate kills lawn grass, weeds and most other plants. A systemic herbicide that moves through plants, killing them from the roots up, glyphosate breaks down quickly in soil, so it's effective for killing a lawn to lay new turf or re-seed, or to convert the lawn area to an alternative use.

Does glyphosate kill grass?

Glyphosate is a postemergence translocated herbicide that effectively kills turf and grassy and broadleaf weeds. Glyphosate is translocated rapidly in all actively growing plants. Make applications when your turf is actively growing.

Is glyphosate safe for grass?

Roundup: The herbicide active ingredient in Roundup is glyphosate, which if sprayed on the lawn will kill not only the weeds but the lawn. ... When used properly it will not kill the desirable turfgrasses in the lawn. This is a selective herbicide that controls specific weeds, but not lawn grasses.