Awns are usually present. Quackgrass is found throughout the Northern United States. Quackgrass can be introduced into turf areas with the planting of ornamental trees and shrubs. Quackgrass is a problem in nursery areas. Once introduced into turf areas, quackgrass spreads by aggressive rhizomes.
Quackgrass is less aggressive in hot temperatures.
Make your postemergent herbicide application to quackgrass that is actively growing and in the 2 leaf to flower stage of growth. Control is only available with a non-selective control product.