Gordon's Amine 400 2, 4-D Weed Killer provides economical broadleaf weed control in lawns, pastures, rangeland, corn, sorghum, wheat and barley. It may also be used on fence rows, drainage ditch banks, rights-of-way and industrial sites. Killer can be used to control weeds in turfgrass such as bluegrass, perennial ryegrass and fescue. It can be applied in spring, summer or fall when weeds are actively growing.