Grant Wood Wood was an instructor with the Department of Horticulture Science. This column is an extension service provided by the Division of Extension and Community Relations and the Department of Horticulture Science, University of Saskatchewan. Quackgrass is one the most troublesome perennial grassy weeds in our lawns.
Rhizomes are underground stems capable of producing new plants.
Because quackgrass is very aggressive and produces many rhizomes, it can quickly dominate a lawn. Choosing a Herbicide Quackgrass is more complicated to control than other weeds. Unfortunately, there is no selective herbicide available to control quackgrass in lawns. A non-selective herbicide will kill all growth it contacts. The non-selective herbicide glyphosate can be used by the homeowner to effectively control quackgrass.