Quackgrass (Elymus repens). Photo: Elizabeth Bella, AECOM, Bugwood.org
(Elymus repens) is a perennial, non-native, cool-season grass. Growth habit
This plant has a creeping habit and can
grow up to 3 feet tall. The leaf blades are blue-green in color and have a rough texture. There is a clasping auricle where the base of the leaf meets the stem.
Quackgrass growth pattern. Photo: HGIC, University of Maryland Reproduction
Sharp-tipped, creeping rhizomes. The seed head forms in the summer and resembles wheat.
Conditions that favor growth
Poor lawn maintenance practices.
Management in lawns
Lawn care practices
Maintain healthy, dense turf that can prevent and help lawns outcompete a weed infestation.
Lawn Care Mechanical management
Hand pulling or using an appropriate weeding tool to dig out a small infestation are the primary means of mechanical weed control in lawns. Hand pulling when the soil is moist makes the task easier.
Manage Weeds Without Chemicals Chemical treatment in lawns
Herbicides for controlling perennial grass weeds are limited and usually available to lawn care companies and landscapers who are certified applicators. Small infestations can be dug out or sprayed with a non-selective herbicide (glyphosate). Reseed the area after you are certain that you have 100% kill.
Lawn Herbicides for Weed Management