Atrazine kills plants by disrupting photosynthesis. Photosynthesis— unique to green, living plants—happens when light energy is converted to chemical energy needed for food production. Simply put, when food production stops, plants eventually starve to death.

What kind of weeds does Atrazine kill?

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.

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.