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Jim from Savage, Mn writes

What product, if any, can kill quackgrass in my established Kentucky bluegrass yard?

(I Live in Minnesota). I am hoping there is a broadcast spray that kills the quack grass but not my established yard.....

Answer:

Unfortunately there is not an herbicide that would kill the quackgrass without damage cool season turf, such as Kentucky Bluegrass. If only a small area of the lawn is affected by the outbreak, spray only the affected area with RoundUp Quick Pro. If the problem amounts to no more than a few spears of quackgrass in an area of your lawn, paint the individual spears with diluted RoundUp QuickPro. Becareful to avoid getting the product on desirable grass. If most of the lawn has been affected by quackgrass, the only sure fire way to get rid of it is to spray the entire lawn with Roundup. Spray when the lawn is growing actively, preferably in the spring. The treatment will kill the lawn grass as well as the quackgrass. After about two weeks, you may begin the replanting.

Answer last updated on: 06/07/2016

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