How to remove & kill moss on a grass lawn

Updated February 21, 2017

While moss may look serene in a forest or on a rocky outcrop, most homeowners do not want it in their yard. Removing moss from a grass lawn is easier than removing other types of weeds, since grass benefits from the nutrients that kill moss plants. A severe moss invasion will take a while to remove, but none of the steps involved are difficult. Remove moss in the spring when the ground has warmed in your area.

Purchase a moss-control product containing ferrous sulphate or ferrous ammonium sulphate from your local garden centre. Neither of these products will harm your grass lawn, but they will kill the moss.

Spray the moss control product on your moss following the manufacturer's instructions for the frequency of application. Do this in late winter or early spring, advises Washington State University. Wait for the moss control product to kill the moss. Dead moss appears brown, not green.

Rake over the moss with a grass rake to pull it out of the ground. Moss has a short root system and will come up from the ground when you rake it.

Dispose of the moss in a compost bin or yard waste bag.


You can skip the moss-control product and remove the moss from your lawn just by raking, though this will take more physical effort.


Moss indicates that your soil pH is too acidic. If you do not amend your soil pH, the moss will return eventually.

Things You'll Need

  • Moss control spray
  • Grass rake
  • Yard waste bag (optional)
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