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Dana from Leesville, Sc writes

Will QuickSilver kill the invasive prostrate knotweed, spurge that has invaded our Centipede lawn?

We have irrigation system. We have used pre emergents, post. MSM herbicide with surfactant and no luck. This stuff has taken over our yard and about to lose all of our sod. We have a 24 gallon tank that we pull behind the lawn mover with two spray nozzles. If we have trees in our lawn will it harm them? Do I need to add any thing else to it. When to put it out and how often? Does it kill spotted spurge, creeping spurge, garden spurge, prostate spurge as well? In flower beds grass and gravel driveway.


QuickSilver Herbicide is labeled for eradicating prostrate knotweed and spotted spurge but not for the other species of spurge requested. It is labeled for applications on established Centipede lawns as they are generally tolerable but they can be sensitive and the product could cause yellowing. Hi-Yield Atrazine Weed Killer is safe for Centipede (if applied as directed) and kills spurge and knotweed.

Answer last updated on: 07/16/2018

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QuickSilver T&O Herbicide

QuickSilver T&O Herbicide

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