The Best Moss Killer For Lawns 2021

Moss can be a major issue for some lawns and it’s caused by poor growing conditions. Luckily, it can be easily treated by using one of our recommended moss killers that are designed specifically for lawns and can be applied in a number of ways.

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best moss killer for lawns
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Using a moss killer on your lawn is very easy to do and highly effective when used between April and September. They are also available in a range of formulas that can be applied by hand, spreader or a pump sprayer.

All the recommendations listed below provide a coverage measurement and dosage instructions for treating your entire lawn. Therefore, before purchasing any of the moss killers, you will want to measure your lawn in square metres.

If you require a quick answer, the best moss killer for lawns is Pro-Kleen Iron Sulphate Formula, which is an effective solution that’s applied via a pump sprayer and is able to treat 2,500 square metres of lawn. However, if you would prefer to spread the product onto your lawn, the Miracle-Gro EverGreen 4-in-1 is the best alternative.

To rate the moss killers within this article, we based our recommendations upon testing (results shown below), plenty of research and a number of factors. The factors that we considered included their coverage, ease of application, pet/child friendly formulation, additional additives and value for money.

Lawn Moss Killer Comparison

Lawn Moss KillerCoverageApplication
Pro-Kleen Iron Sulphate2,500 sqm per 2.5 KGPump Sprayer
Trade Farmni Premium1,000 sqm per 1.0 KGPump Sprayer
Maxicrop Moss Killer166 sqm per 2.5 LitresWatering Can
Miracle-Gro EverGreen 4-in-1100 sqm per 3.5 KGHand or Spreader
Miracle-Gro EverGreen No Rake100 sqm per 10 KGHand or Spreader

You may find that a moss killer can often be included within a versatile formula. Although this is great for all-round lawn health, you may want to purchase a dedicated moss killer for lawns in order to achieve the best results.

Below is a list of the best moss killers for lawns that are easy to use and produce effective results.

The Best Moss Killer For Lawns


1. Pro-Kleen Iron Sulphate Moss Killer

Pro-Kleen Iron Sulphate Moss Killer
A popular choice for killing moss upon lawns is the Pro-Kleen formula. It uses a professional grade iron sulphate that has twice the coverage when compared to standard formulas. According to the brand, it’s a popular moss killer for lawns that’s been used and trusted by professionals in the UK for many years.

To use this moss killer, you will require a watering pump sprayer for the best coverage. The brand also state that 2.5 KG will approximately treat 2,500 square metres of lawn but you can purchase bigger tubs if required.

Other features of the Pro-Kleen Iron Sulphate include:

  • Superior quality and long lasting formula
  • Available in 1 KG to 10 KG tubs with a resealable lid
  • Can be applied to wet or dry lawns
  • Tried and tested for the best results
  • Encourages strong and dark green grass

Overall, the Pro-Kleen Iron Sulphate is a high performing moss killer for lawns that provides excellent results. It’s easy to apply with the suggested dosage amounts listed on the tub and you can apply it to wet or dry lawns too.
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2. Miracle-Gro EverGreen 4-in-1 Moss Killer

Miracle-Gro EverGreen 4-in-1 Moss Killer
By far one of the most popular products on the market to treat moss upon lawns is the Miracle-Gro 4-in-1. It’s a lawn feed and moss killer that kills moss and weeds but also promises greener grass in just 7 days.

Depending upon the size of your lawn, the brand offer bags suitable for lawns up to 500 square metres. In terms of applying the product to your lawn, you will need to use a spreader for the best results.

Other features of the Miracle-Gro EverGreen Complete include:

  • Water Smart formula that resists heat
  • Visibly greener grass in just 7 days
  • Kills moss and weeds
  • Available in a range of bag sizes
  • Application for lawns only

Overall, if you want a quick and easily solution for killing moss upon your lawn as well as providing many other benefits, this formula is a great choice. For the best results whilst using this formula, the brand state that you should spread it upon your lawn between April and September.
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3. Trade Farmni Moss Killer For Lawns

Trade Farmni Moss Killer For Lawns
Another iron sulphate formula is by the Trade Farmni brand and it’s specifically designed to prevent lawn diseases. Along with killing moss upon your lawn, it can also be used as a turf hardener and to prevent the build-up of worm casts.

In terms of the coverage of this moss killer, it can treat approximately 800 to 1,000 square metres per 1 KG.

Other features of the Trade Farmni Moss Killer include:

  • Easily soluble in water
  • Only available in 1 KG tubs
  • Powerful iron sulphate formula
  • Best results when used in cool damp conditions
  • Encourage healthy green grass
  • Dosage instructions included

Overall, the Trade Farmni Moss Killer for Lawns is an excellent all-round example of what’s available. It’s more expensive that then Pro-Kleen formula but it’s a premium quality moss killer and lawn greener that won’t disappoint.
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4. Maxicrop Moss Killer For Lawns

Maxicrop Moss Killer For Lawns
The Maxicrop Moss Killer and Lawn Tonic is fairly unique because it includes a seaweed extract within it’s formula. It’s a liquid application that’s suited to lawns of all sizes and it simply mixes with water in a watering can. According to the brand, a 2.5 litre tub is able to approximately treat 166 square metres with great results.

Other features of the Maxicrop Moss Killer and Lawn Tonic include:

  • Easiest to mix with water
  • Quick and effective results
  • Added ferrous sulphate
  • Makes grass greener
  • Application with a sprayer or watering can

Although expensive when you consider the coverage, it does provide great results with such a simple application. The added seaweed extract also encourages the grass to grow greener and it’s a great addition that makes this formula standout from the rest on the market.
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5. Miracle-Gro EverGreen Natural Moss Killer

Miracle-Gro EverGreen Natural Moss Killer
Another moss killer by Miracle-Gro is their latest “No Rake” formula. It promises to reduce moss regrowth, provide feed for 3 months and produce greener grass in just 7 days.

This particular formula is available in three different sizes that are suitable for 50, 100 or 200 square metres of coverage.

Other features of the Miracle-Gro No Rake Moss Killer include:

  • Extra magnesium for greener grass
  • No staining of paths or patios near the lawn
  • Children and pets can enter once watered in
  • Application by hand (wearing gloves) or a spreader
  • Results within just 7 days

Although the organic formula is more expensive when compared to the liquid alternatives, the hand application may be more suitable for some people. It also benefits from the fact that it doesn’t just act a moss killer for lawns but also prevents the regrowth and encourages greener grass.
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How We Tested & Rated The Moss Killers

As we take great pride in our garden, we always try and keep the lawn free of moss and bring the best out of it. This has meant that we’ve tried and tested a whole range of formulas that are available on the market.

One of our favourites is the Miracle Gro 4-in-1, which we apply to the lawn using a spreader. As you can see in the photo, this was the setup we used to treat the moss upon our lawn. As well as our experience, we also based our recommendations within this article upon plenty of research and a number of factors. The factors that we considered included their coverage, ease of application, pet/child friendly formulation, additional additives and value for money.

best lawn feed and moss killer

Below is a video of us testing the moss killer as well as results of the moss being killed off without effecting the grass.

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Moss Killer Buying Guide

Lawns that are covered in moss aren’t aesthetically pleasing to look at and it will eventually get worse. Using a moss killer that’s designed for a lawn can remove the moss in as little as a week.

They are available in a range of formulas that include organic ingredients to powerful iron sulphate. Application varies with liquid moss killers requiring a pump sprayer or watering can whereas others can be applied by hand.

To help you make an informed buying decision, we have produced the below guide regarding moss killers for lawns.

What Causes Moss on the Lawn

Poor growing conditions is the main contributor to moss growing on your lawn. Some of the main areas of the lawn that suffer from moss include:

  • Wet and waterlogged areas
  • Drought stressed grass
  • Worn areas with heavy foot traffic
  • Beneath trees or other shady areas
  • Infertile soil or acidic conditions

Using a moss killer that’s designed for lawns will remove the growth of moss but it’s important that you also try and rectify the causes of the moss growing in the first place.

When to a Apply a Lawn Moss Killer

Many professionals state that between April and September is the best time to apply a moss killer to the lawn. This is because moss produces spores, which are more common in spring and autumn. This means in April, you can target the moss just before it begins to spore in the summer months.

Application Tips

The application of the product really depends upon the moss killer you are using because the dosage amounts differ. Some can also be used in wet or dry conditions and applied via a pump sprayer, watering can or by hand using gloves.

It’s advised that you apply moss killers in cool damp conditions and avoid extremely dry or hot conditions.

It’s also critical that you follow the dosage instructions closely because too little won’t be as effective and too concentrated can scorch the grass.

After application, you will want to allow a specified period of time (usually 7 days) for the formula to get to work. Once the moss is visibly dead or has turned black, you can use a garden rake to collect the moss.

best moss killer for lawns uk

Pet and Children Friendly

Freshly spread moss killer on the lawn can be hazardous to children and pets. As with a weed killer, you will want to wait a specified amount of time before allowing your pets or children on the lawn. Some brands state that you should wait up to 5 days whereas others state that it’s safe after it has been watered.

Coverage

As most moss killers for lawns are available in multiple sizes, it can be difficult to judge which offers the best value for money. The coverage is measured in square metres and this will allow you to see which formulas are best suited to your lawn size and if its also good value for money.

To determine how much you will need, you can multiply the length and width of your lawn. This will then provide you with the lawn’s size in square metres and allow you to choose a suitable size moss killer.

Conclusion

Moss can ruin the appearance of your lawn and if left untreated, it can become harder to remove. Using the latest moss killers that are designed specifically for lawns will allow you to effectively take action with results in as little as 7 days.

All of our recommendations are suited to a range of budgets and can be applied in various methods to best suit your requirements.

The Author Who Worked On This Article

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Dan Morgan

As a keen DIY’er, gardener and somebody that loves the latest tech, Dan is someone that brings years of experience in multiple trades. Since buying his first house, he has been obsessed with renovating properties and filling it with the latest products. This has led him down the road of testing hundreds of products and creating in-depth “how-to” and informative guides that offer his first-hand experience. Other interests include working on cars, keeping fit through sports or his home gym, caravanning and drinking great coffee.

If you would like to read more about Darimo and the authors, you can visit our about page. This goes into great detail regarding how we test products, create our guides and everything else.

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