May. So, it is important to cut early and apply herbicides such as Pursuit , Sinbar and Zorial as soon as the hay is off.
Pursuit is very effective for season-long pigweed control and fair on grasses.
Sinbar gives fair to good control of pigweeds and poor to fair control of weedy grasses. Zorial gives excellent control of crabgrass and fair control of foxtails and pigweeds.