Monkey Grass

Weed Killer for Liriope

Anonymous added on May 4, 2011 | Answered

What is the best weed killer to use on liriope (monkey grass) to kill crabgrass and dollarweed?

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Certified GKH Gardening Expert
Answered on May 5, 2011

You have a few options:

I would recommend pouring boiling water on the areas where the weeds are growing. Boiling water will kill whatever it comes into contact with.

Alternatively, you could cover liriope clumps with cardboard boxes or use a gallon milk jug with the bottom cut off as a shield. Spray the grass with an herbicide, such as Round-up, during hot weather when the grass is actively growing. One application won't work, as it's going to take several. If a little herbicide touches the liriope, don't despair. It will only kill the little sprout, not the clump.

Ortho Grass-B-Gon will kill grass and weeds but won't harm your liriope.

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