Lawn3's MiracleMOSS™

Moss Treatment - Step

by step guide

Benefits of using MiracleMOSS™


Want to get rid of moss in your garden?, then use our MiracleMoss treatment brought to you by Lawn3. Typically, you will only need to use this once or twice a year. The best time to use our treatment is in the early Spring and Autumn as additional lawn care to reduce levels of existing moss. It’s also harmless to pets and wildlife and will not damage border plants.


Step 1: Use Liquid Iron to treat your lawn

The first step to creating your moss free lawn is to apply a soluble iron solution. Large levels of iron are toxic to moss once it has been absorbed into the plant. The moss will turn a black/dark brown colour within a 24-48-hour period and will eventually lead to the entire plant dying all together within a couple of weeks. Once the Liquid Iron Moss Treatment has taken effect, it will act as a moss killer and prevent moss from growing. The moss treatment may also cause nearby grass to turn brown, however, grass should recover without any issues & you should have healthy grass in no time!


The liquid iron sulfate at a lower concentration can actually also help strengthen the grass. To find more ways to help your lawn, view our range of lawn fertilizer treatments.


Step 2: Scarification and overseeding 

Scarification and over-seeding are highly recommended to help the grass grow back in its place. If the ground is dry and it’s unlikely that any rain is forecast then you’ll need to build up a water reserve across a week or so, depending on how dry your soil is. This can be achieved by running your sprinkler a couple of hours a day over your grass seed. In order for seeds to germinate & root they’ll need water - but be careful not to overdo it and over sodden the ground with gallons of water! 




  • Spread seeds evenly 
  • Be careful not too much grass is sticking out the lawn. When you’re spreading your seeds, they could potentially stick to the grass instead of on making contact with the soil. Be sure they’re making contact by using a large brush to knock the seeds on to the soil. 


  • Roll your lawn either by foot or if you have on your lawnmower – roll it with the engine off. The more contact your seeds have with the soil – the better! 
  • Mow the lawn as close as you can without scalping (before overseeding)
  • Water lightly every day or when possible for the first couple of weeks (unless it’s raining) to keep your seeds from drying out.


Step 3: Use Lawn3's MiracleMOSS™ Treatment 


Once you’ve followed these steps. You’re ready to use our unique MiracleMOSS™ treatment program containing potassium, iron, bacteria and beneficial fungi to remove all the moss from your lawn. This also provides a benefit to the rest of your lawn. The treatment process, will kill moss and the bacteria and fungi in the product (naturally occurring soil organisms) will compost the dead lawn moss. This, in turn, increases the nutrients in the soil in order to feed the existing grass. This helps the grass grow stronger and greener and the enriched soil helps other plants in your garden suppress moss growth. To find out other ways to improve your soil, view our fertiliser treatments.


What causes moss to grow?


Moss is a primitive plant and could even be one of the worlds oldest plant specimens. There are thousands of species of moss with over 50 known to affect turf surfaces. They have no root structure and depend on moisture for survival and reproduction.


Moss can be a temporary problem following drought or waterlogging, or can be part of a persistent problem with a lawn suggesting there are problems with the underlying conditions it's growing. When small patches of moss start to grow, it competes against the lawn for water and nutrients, making the lawn spongy and uneven to walk on.


On new lawns, moss may grow due to poor site preparation but on established lawns a number of factors could be the cause, including:


  • Low soil pH (acidic soil) - a soil test can help identify this.
  • A lack of feed
  • insufficient aeration
  • Poor drainage (rentention of water on the lawn surface can be a major factor, commonly caused by compacted soil and especially where the lawn is over a clay soil which is more prone to waterlogging).
  • Excessive Shade - moss prefers to grow in shady conditions which is also why it is more likely to grow in the winter months when days are shorter.
  • Close mowing - this can leave weak or bare areas for moss and weeds to grow.


Once moss is killed, it is important the vigour of the grass is improved and the other contributory factors are addresses in order to prevent moss growing again.

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LAWN3 West Midlands
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West MidlandsDY8 5AQUnited Kingdom

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