lawn dying - Knowledgebase Question

Barrigada, Gu
Question by japconst
August 29, 2010
My lawn has been slowly but surely dying. Only weeds thrive now! I saw some small worms this morning when I was pulling up weeds. Could my lawn have been killed by cutworms? How can I treat my lawn and bring it back to life again?


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Answer from NGA
August 29, 2010

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Sounds like you've found grubs in your lawn and, yes, grubs can kill a lawn - they feed on the roots. You'll want to control them with a product such as GrubEx or Bayer Advanced Season Long Grub Control.

There are a couple of ways to renovate your lawn. You can rototill it up and start all over, or you can rent a core aerator and aerate your lawn, then spread some sand or compost over the area and reseed.

If you decide to redo the entire lawn, start by rototilling the area to break up the soil. Remove any debris (stones, sticks, weeds, etc.) and then spread 4-5 inches of organic matter over the area and rototill it in, then rake the area smooth. Sod produces an almost instant lawn because the grass is mature with a healthy root system. After laying the sod and watering it down well, it only takes a week or two to become firmly established. Seeding takes a little longer, but the results are eventually the same - a lush, thick, healthy lawn.

The second option is to aerate your existing lawn. A core aerator will remove one inch by three inch plugs from the lawn. Leave the plugs on the lawn and they will dissolve in rain or water from the sprinklers. After aerating spread a thin layer of sand or compost over the area and water it in well. The sand or compost plus the soil from the plugs will work their way down into the holes left by the plugs. You can then overseed your entire lawn.

Either approach should improve the soil beneath the lawn and help your lawn grow lush and thick, which will help crowd out any future weeds.


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