Atrazine is effective against several common broadleaf weeds, such as Chickweed, Clover, Henbit, Pigweed, Ragweed, Doveweed, Oxalis, Betony, Gripeweed, and Morning Glory. Most pest grasses are also killed by Atrazine. This includes Foxtails, Annual Bluegrass, invasive Bermuda, Quackgrass, and Wire Grass.

Does Atrazine kill existing weeds?

Atrazine is a general-purpose herbicide that works as both a pre- and post-emergent. This means it will kill existing weeds and those that have yet to spring up from the ground.

How long does atrazine take to kill weeds?

Atrazine is mainly absorbed through the roots of weeds and then transported to the actively growing tips and leaves. Some absorption through leaves does occur. Atrazine kills the weed by inhibiting photosynthesis. This takes between 14 and 21 days.