What Are Some Methods of Quackgrass Control?


Quick Answer

Quackgrass can be controlled by masking its presence through nitrogen fertilization, digging up patches, covering it with plastic or using herbicides. Some gardeners also choose to treat it as a lawn rather than a weed and simply mow it.

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Full Answer

Fertilizing a lawn with nitrogen fertilizer and mowing more often than usual can strengthen the grass to fight back against the quackgrass; this method can only be used during wet summers. It is possible to dig up patches of quackgrass and reseed the topsoil, but because quackgrass rhizomes can grow up to 8 feet deep, this method does not always work. Laying plastic over the quackgrass for about a week traps heat near the soil and kills the quackgrass. Non-selective herbicides also kill quackgrass but must be applied carefully so the surrounding lawn is not killed.

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