Lawn Moss Control

Lawn Moss Control

Controlling moss in grass, turf and lawns

There are different ways you can kill moss in grass, either with spreadable granules (through a granule applicator) or a sprayable liquid (from a knapsack sprayer or watering can).

Both product types usually have some fertiliser or seaweed added to encourage the grass to re-establish after the area is controlled.

It is also possible to buy a granule moss killer with a weed killer added, such as Amvista Turf Rise no.4. Results from these all-in-one treatments are acceptable; however, we believe a separate spray application for weeds gives better results.

Sul-Fe blackens moss while greening up grass. It is easily applied using a knapsack sprayer or watering can with a sprinkler bar. Can control moss at higher rates.

A liquid option is MossOff Lawn which offers clean, safe non-chemical treatment for killing moss in lawns. MossOff Lawn is a concentrate made from natural, biodegradeable substances, it works quickly and provides long-lasting results.
1 L dilution covers approx 7 (m2)

Maxicrop Moss Killer & Lawn Tonic acts fast - controlling moss & fertilising your lawn. This seaweed fertilizer not only greens up your lawn, but with added iron it will also control moss.
10 L treats up to 66m2

Moss control in lawns

Moss grows on lawns when grass growth is slow, the soil is wet, or there is high humidity.  Excessive thatch on a lawn also provides the damp conditions in which moss thrives.  When moss is present, it is often a sign that the grass in the lawn is not as healthy as it should be.

When found in a lawn, moss is a good indicator that:

  • Ground remains wet for long periods
  • Nutrient level of the soil is low
  • Soil is compacted and lacks organic matter
  • Grass may be cut too short or even scalped down to bare earth
  • Area is shaded from regular sunshine
  • Poor air flow around the lawn 

How to kill moss in amenity grass (golf courses)

Maxicrop Moss Killer & Lawn Tonic is an effective product designed specifically for the elimination of moss on grassed areas. Its active ingredient, liquid sulphate of iron, rapidly kills and controls the moss in lawns. In addition to this Maxicrop Moss Killer & Lawn Tonic contains seaweed extract which helps to encourage the healthy growth of turf.

Amvista Liquid Iron is a 5L concentrate with added nitrogen and sulphur applied in variable dilutions it has a serious blackening effect at higher rates.


Since the reclassification of Moss as a plant, products for the treatment of Moss now come under The Plant Protection Products (Sustainable Use) Regulations 2012. This means that only products that have HSE accreditation can legally be used for the control of Moss. To avoid breaking the law, contractors and private users must ensure that the product being used is appropriately approved.  

DDAC (found in AlgoClear and AlgoClear Pro) carries this accreditation but many others do not. BAC Found in BAC50 and Ultima Plus XP) DOES NOT carry this HSE accreditation. Any previous recommendations for these products should now be considered invalid.

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