Quackgrass Growing Among Iris
My iris planting is filled with quackgrass. Is there anything I can spray the planting with to kill the quack without harming the iris?
Unfortunately anything that will kill the quackgrass will also injure or kill your iris. You have a couple of options. Carefully paint a total vegetation killer on the grass blades. These products will kill the leaves and roots of the grass. Do not let the chemicals touch the iris. Several treatments may be needed. Or you can dig out the iris. Remove any quackgrass rhizomes (white root-like structures) that may be intertwined with these plants. Plant the iris in a vacant garden space or container until the bed is weed free and ready to plant. Then treat the bed. Several applications of a total vegetation killer, repeated cultivation throughout a season or two, or a summer of solarization (covering the edged bed with clear plastic) will be needed to get the weeds under control. Whether using traditional or new environmentally friendly products read and follow label directions carefully. All these products are plant killers and can injure or kill your desirable plants as well as the weeds.
Related
Upcoming Live Events
& Webinars
April 3, 2024
Garden Trends
Franklin Public Library, Franklin, WI
April 10, 2024
FREE WEBINAR
Container Gardening Throughout the Year
Register now
April 11, 2024
FREE WEBINAR
7 Steps to Managing Water Where it Falls in Your Yard
Register now
April 17, 2024
Landscaping for Birds:
A Gardener’s Perspective
Glendale, WI
April 18, 2024
Be a Waterwise Gardener
Golden Rondelle Theater, Racine, WI
Register now
April 20, 2024
Pruning Hydrangeas and Other Shrubs
Pasquesi Home & Gardens, Lake Bluff, IL
April 27, 2024
Ridges & Rivers Book Festival
Viroqua, WI
April 28, 2024
Flowering Trees and Shrubs
Ebert's Greenhouse Village, Ixonia, WI
May 1, 2024
FREE WEBINAR
Ornamental Fruits and Vegetables
Register now
May 9, 2024
FREE WEBINAR
How to Plant Your Rain Garden
Register now
WATCH ON-DEMAND WEBINARS
Learn More