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Quack Grass can only be treated effectively and cost efficiently with roundup.
Problem
Quackgrass is one the most troublesome perennial grassy weeds in our lawns. Also called couchgrass, this herbaceous perennial dies back to "rhizomes" for the winter, only to appear again early the following spring. Rhizomes are underground stems capable of producing new plants. Because quackgrass is very aggressive and produces many rhizomes, it can quickly dominate a lawn.