Garden & Lawn

Top 5 Best Moss Killer For Lawns – Soluble & Granular

Last updated on May 11th, 2021

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Have you ever looked out with pleasure at your glossy green lawn, only to see patches of fuzzy green fronds that look out of place. That could be moss – and it could be a horror story if left untreated. Aside from weeds, moss is one of the most difficult things to remove from your lawn and if done incorrectly can actually make the infestation worst.

If left unattended, moss spreads its spores everywhere and soon it overtakes your lawn, and possibly even more of your garden. Its deep intricate systems root far into the ground so simply raking the moss off won’t do. But our review of the Best Moss Killers gives you all the information you need to eradicate this unwelcome garden guest.

Our Best Moss killer for Lawns review looks at the pros and cons of each of the products we present and discusses the best features of each, some of them do more than just kill moss. We also recommend in which situations to use each product as some are easier to use to help avoid burning your lawn which is a common mistake people make when applying moss killers. Our Buyer’s Guide discusses moss killers, how and when to use them and gives some tips for avoiding the problem of moss patches.

Moss infested loss which needs treating with a moss killer
Moss infested loss which needs treating with a moss killer

Our Best Pick is the Ferromel 20 Iron Sulphate Lawn Conditioner, Lawn Feed & Moss Killer. This lawn product contains almost 20% iron and makes short work of your moss as well as conditioning your lawn to make it stronger.

Our Runner-up, the Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer, is another multi-purpose lawn product that kills moss. But this product comes in a resealable 2.5kg container that makes it a good choice for those with small lawns.

BEST PICK
Ferromel 20 ferrous sulphate Lawn Conditioner
RUNNER-UP
Pro-Kleen 2.5 KG PREMIUM Iron Sulphate (Makes up to 2500L When Diluted & Covers up to 2500m2) Pure Lawn Tonic- Ferrous Sulphate of Iron Lawn Conditioner and Turf Hardener. Dry Powder easily soluble in water
Scotts Miracle-Gro EverGreen Complete 360 sq m + 10% Extra Free Lawn Food, Weed and Moss Killer Bag
Maxicrop Moss Killer + Lawn Tonic 2.5L
Title
Ferromel 20 ferrous sulphate Lawn Conditioner
Pro-Kleen Premium Iron Sulphate
Scotts Miracle-Gro EverGreen 4-in-1 Complete Lawn Food, Weed and Moss Killer
Maxicrop Moss Killer + Lawn Tonic
Overview
If you have a problem with moss then this is actually the raw chemical most moss killer products add. This is the stuff the professionals use, no fancy packaging here with gimmicks. Can be applied by sprayer mixed with water or applied granular straight onto the lawn. Also feeds lawns and encourages greener growth and hardens turf. If you have issues with worm casts it will also help tackle this issue too. Without doubt one of the best moss killers on the market for killing moss..
Another moss killer the professionals use, its actually a lawn tonic so encourage healthy grass but it works a treat for killing moss as sulphate of iron kills moss. This can also be applied mixed with water or by applying granular onto the lawn. Make sure you measure it our correctly as you can actually overdo it and kill parts of your lawn.
For those who want to use a branded domestic product, this ticks all the boxes and actually feeds the lawn, as well as kill moss and weeds. Overall its a great product but it needs to be applied as a granular. We recommend using a lawn spreader to avoid applying it uneven or at the wrong rate and risk burning your lawn. This is the best choice if you want to feed the lawn as well as control weeds and kill the moss.
For those who don't won't to deal with a granular moss killer, this is a good liquid concentrate alternative and it's actually seaweed extract, great for feeding lawns mixed with ferrous sulphate to kill the moss.
Granular or Concentrate
Granular (best mixed with water)
Granular (best mixed with water)
Granular
Concentrate
How to apply
Best dissolved in water and applied with fine watering can or sprayer
Dissolve with water and apply with fine watering can or sprayer
Apply with lawn spreader
Mix with water and apply with watering can or sprayer
BEST PICK
Ferromel 20 ferrous sulphate Lawn Conditioner
Title
Ferromel 20 ferrous sulphate Lawn Conditioner
Overview
If you have a problem with moss then this is actually the raw chemical most moss killer products add. This is the stuff the professionals use, no fancy packaging here with gimmicks. Can be applied by sprayer mixed with water or applied granular straight onto the lawn. Also feeds lawns and encourages greener growth and hardens turf. If you have issues with worm casts it will also help tackle this issue too. Without doubt one of the best moss killers on the market for killing moss..
Granular or Concentrate
Granular (best mixed with water)
How to apply
Best dissolved in water and applied with fine watering can or sprayer
Buy from Amazon
RUNNER-UP
Pro-Kleen 2.5 KG PREMIUM Iron Sulphate (Makes up to 2500L When Diluted & Covers up to 2500m2) Pure Lawn Tonic- Ferrous Sulphate of Iron Lawn Conditioner and Turf Hardener. Dry Powder easily soluble in water
Title
Pro-Kleen Premium Iron Sulphate
Overview
Another moss killer the professionals use, its actually a lawn tonic so encourage healthy grass but it works a treat for killing moss as sulphate of iron kills moss. This can also be applied mixed with water or by applying granular onto the lawn. Make sure you measure it our correctly as you can actually overdo it and kill parts of your lawn.
Granular or Concentrate
Granular (best mixed with water)
How to apply
Dissolve with water and apply with fine watering can or sprayer
Buy from Amazon
Scotts Miracle-Gro EverGreen Complete 360 sq m + 10% Extra Free Lawn Food, Weed and Moss Killer Bag
Title
Scotts Miracle-Gro EverGreen 4-in-1 Complete Lawn Food, Weed and Moss Killer
Overview
For those who want to use a branded domestic product, this ticks all the boxes and actually feeds the lawn, as well as kill moss and weeds. Overall its a great product but it needs to be applied as a granular. We recommend using a lawn spreader to avoid applying it uneven or at the wrong rate and risk burning your lawn. This is the best choice if you want to feed the lawn as well as control weeds and kill the moss.
Granular or Concentrate
Granular
How to apply
Apply with lawn spreader
Buy from Amazon
Maxicrop Moss Killer + Lawn Tonic 2.5L
Title
Maxicrop Moss Killer + Lawn Tonic
Overview
For those who don't won't to deal with a granular moss killer, this is a good liquid concentrate alternative and it's actually seaweed extract, great for feeding lawns mixed with ferrous sulphate to kill the moss.
Granular or Concentrate
Concentrate
How to apply
Mix with water and apply with watering can or sprayer
Buy from Amazon

Our top 5 best moss killers for lawns which are included in our review are listed below.

  1. Ferromel 20 Iron Sulphate PREMIUM Lawn Conditioner, Lawn Feed & Moss Killer – Best Pick
  2. Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer
  3. EverGreen Complete 4-in-1 Lawn Care
  4. Maxicrop Moss Killer + Lawn Tonic
  5. IVISONS Fertiliser Liquid Iron, tonic Moss Killer

Best Pick

Ferromel 20 Iron Sulphate Lawn Conditioner, Lawn Feed and Moss Killer
The Ferromel 20 Iron Sulphate Lawn Conditioner, Lawn Feed & Moss Killer contains almost 20% iron which makes it a professional-grade lawn product and especially good for controlling moss. It performs two functions – killing moss and conditioning your lawn. Be sure to carefully read the safety precautions whether you use it in its (recommended) liquid state (dissolve in water) or its dry state but this should be applied dry with caution to avoid burning your lawn. This is a moss killer that suits everyone and is very effective.

Runner-up

Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer
The Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer is another multi-purpose lawn product. Use it to condition your lawn or to kill moss which it does very well. This is a premium moss killer used by lawn care professionals so you know its the good stuff. It comes in a 2.5kg resealable tub which makes it a great choice for those who have small lawns or are lucky to only have minor moss patches.

Top 5 Recommended Moss Killer For Lawn Reviews

1. Ferromel 20 Iron Sulphate PREMIUM Lawn Conditioner, Lawn Feed & Moss Killer

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BEST PICK

Ferromel 20 Iron Sulphate PREMIUM Lawn Conditioner, Lawn Feed & Moss Killer

The Ferromel 20 Iron Sulphate 25KG Premium Lawn Conditioner & Lawn Feed comes in a 25kg bag that is packed with moss killing and lawn conditioning abilities. With almost 20% iron, it is perfect for promoting stronger turf growth and greener grass while being very effective at killing moss.

To use as a moss killer or condition your lawn, dissolve in water to apply with a watering can or garden sprayer. Allow the liquid form to dry after application before you let your kids or pets loose on the lawn.

Alternatively, use it in its dry state using a lawn spreader by hand, though you may burn your lawn with this method, so be careful. Some spreaders do not spread it very well as its so fine. We recommend spraying on for amateur gardeners to avoid issues spreading it.

Trusted by professionals and home users, this moss killer covers 2,500m2 maximum for greening purposes and 12,000m2 for moss killing. The easily accessible tab of moss killer performs best in liquid conditions and should be mixed with water as prescribed in the instructions. Use a good spreader to get optimum results but if you are insured, using a sprayer is safer.

Pros

  • Can be used as a moss killer or lawn conditioner according to your needs.
  • Effective both when dissolved in water or spread in its dry state.
  • Covers a wide area over a given time.
  • Trusted by professionals to maintain lawn health.
  • Comes at an affordable price. 

Thoughts and recommendations

The Ferromel 20 Iron Sulphate Premium Moss Killer, Lawn Conditioner & Lawn Feed is a great product. Its versatility is that you can use it to green your lawn or to kill moss; and it can be applied dry, or mixed with water and applied using a good garden sprayer.

If you have a problem with the instructions, you can download them online and continue working. Effective, affordable and multipurpose are some of the words that would describe this product perfectly. After taking all this into consideration, we chose this as our Best Pick of the Lawn Moss Killers we present here as it’s just so effective which is why the professionals swear by it.

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2. Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer

Runner-up

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Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer

The Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer is another option also used by professional landscapers to keep moss at bay and the grass green.

Packed in a 2.5kg container, the ferrous iron moss killer can be used in its wet or dry form. However, to obtain the best results, use it wet. On keeping the grass green, the 2.5kg unit will cover 2500m2 giving good coverage for large lawns.

On treating and killing moss, it will cover 500m2 and 1500m2 for turf hardening. Easy to use and store in a resealable container, this moss cleaner is effective and is one of the most popular moss killers we looked at. As always, follow the instructions to get the expected results.

Pros

  • Used for various lawn functions and comes in a resealable tub.
  • Can be used in the dry form using a spreader or wet form in a sprayer, whichever works best for your lawn.
  • Covers up to 500m2 when killing moss.
  • Professional grade, thus results are guaranteed.

Cons

  • Lacks a scoop for precise measurements.

Thoughts and recommendations

The Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer is an affordable moss killer and a great alternative to our best pick. Those with small lawns will appreciate the 2.5kg resealable tub. We like that it can be used in both dry and wet form depending on how you prefer to spread your lawn treatment. This moss killer has many positive reviews on the sales website, that support our choice of it as the Runner-up in our review.

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3. EverGreen Complete 4-in-1 Lawn Care Bag

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EverGreen Complete 4-in-1 Lawn Care Bag

The EverGreen Complete 4-in-1 Lawn Care Bag gives you a thick green lawn at the same time as annihilating weeds and moss – a true multi-tasking product ideal for spring and autumn lawn care.

Sold in durable plastic 12.6kg bags, the compost sized bags contains iron sulphate which is known to have the desired effect on moss. It relies on Watersmart technology to ensure the soil entraps water and nutrients which is an added feature not found in other products.

This lawn treatment can be used in spring, summer or autumn. Be sure to keep children and pets away from the lawn at this time to prevent any harmful health effects. You can expect to see results in around seven days.

You will need a spreader, so if you don’t possess one, we suggest you get one. It will make the process a whole lot easier and keep your grass from burning, as too much product spread in one area leaves the lawn with unsightly bald patches. If you’re not experienced, we don’t recommend spreading by hand. A lawn spreader is a must.

Pros

  • Multi-tasks by thickening your grass, making it greener, killing off moss and weeds.
  • Three-season use lets you care for your lawn throughout the growing seasons.

Cons

  • Needs a spreader and a keen eye to facilitate equal product distribution.

Thoughts and recommendations

The EverGreen Complete 4-in-1 Lawn Care Bag is a good choice if you have a large area of lawn to cover. It helps your grass grow greener and thicker, controls weeds, kills moss, its simply does it all, however you have to carefully will have to follow the provided instructions. Make sure to use a spreader and follow all the instructions provided.

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4. Maxicrop Moss Killer + Lawn Tonic

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Maxicrop Moss Killer + Lawn Tonic

The Maxicrop 2.5L Moss Killer + Lawn Tonic features a seaweed extract which is what makes it more unique, combined with the all-powerful ferrous sulphate for killing moss. This tonic is designed to be applied mixed into water, making it easy to apply and much less likely to burn the lawn.

Appropriate for home gardens, the 2.5L unit can be mixed with water within the recommended ratios to kill off the moss within an area of 80m2. Alternatively, you can use this product in conditioning your garden to always look green as a general feed.

The seaweed extract is the ingredient that is responsible for promoting greener growth. It also has 2% nitrogen to supply the soil with that much-needed nutrient. Keep this product away from your pets and children as it may cause skin irritation when wet but once dried it perfectly safe.

Pros

  • Mix with water to start killing moss straight away.
  • Features a seaweed extract that promotes the growth of greener grass.
  • Easy to apply by watering can or sprayer (sprayer is more efficient).
  • Results visible in a few days if your moss isn’t too thick.
  • Budget-friendly and so good for domestic gardens, even those with large lawns.

Thoughts and recommendations

The Maxicrop 2.5L Moss Killer + Lawn Tonic is a simple and affordable product that you can use on a sizeable home lawn. It takes care of two functions – keeping your lawn green and keeping the moss at bay. Overall its a great option to consider, especially if you want something you can just mix with water and water on.

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5. Ivisons Fertilisers Liquid Iron Lawn Tonic Moss Killer

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The Ivisons Fertilisers Liquid Iron Lawn Tonic Moss Killer comes in 10 litres or 20 litres containers that are suitable sizes for those with large lawns to look after. The solution handles four lawn care functions: controls moss, lawn winter feed, turf hardener and lawn tonic. As a bonus, it can even suppress worm cast if need be. If you require all of these four functions in one product, you are in luck.

This product needs a boom sprayer or knapsack sprayer to get the right coverage and effective application. If you use the 50/50 ratio of water to moss killer, the 20-litre container will cover 1248m2 comfortably. Since this product contains iron sulphate hydrate, be sure to keep it away from pets and children until it’s dry. Wear protective clothing to avoid skin irritation at all times, and don’t spray it into the wind.

Pros

  • Multi-functional for four year-round lawn care functions.
  • Ideal for large lawns and professionals.
  • Results visible in a few days if your moss hasn’t completely taken over your lawn.

Thoughts and recommendations

The Ivisons Fertilisers Liquid Iron Lawn Tonic Moss Killer is a powerful moss killing solution. It combines four lawn care functions, including killing moss, into one product and the 10L and 20L containers mean that it’s cost-effective to buy for use on large lawns.

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What to consider when choosing a moss killer for your lawn

Having moss in your lawn can turn into a serious problem if you don’t address it quickly and in the correct way. This Buyer’s Guide gives advice and information on applying moss killers and using a scarifier or lawn rake to remove moss.

However, we would rather you never encounter the problem of a mossy lawn so we end by offering some preventative measures to avoid this problem in your garden.

Raking

Lawn care - scarify and aerate your lawn to remove moss and thatch
Lawn rake/scarifier being used on lawns

Raking is an easy method to remove moss if the growth is not widespread. However, raking your moss at the wrong time to remove it from the lawn just heightens the problem. You must rake in very early spring when the spores, otherwise the spores spread and more moss starts growing. Or you can spread the moss killer before and after raking which is a much better way to remove moss without the risk if making the matter worst. If you have a heavy growth of moss, you must apply moss killer before raking or scarifying your lawn.

Moss Killers

Multi-tasking

Most moss killers perform at least two tasks – killing the moss and fertilising the soil. One of the products we review, the EverGreen Complete 4-in-1 Lawn Care Bag, controls moss, kills weeds, feeds the lawn and improves water absorption. What harms the moss and weeds is good for your grass. It’s a win-win for you. Check each moss killer product to see what other lawn care tasks it does for you.

Chemicals

Most moss killers use Ferrous sulphate, a chemical containing iron. Ferrous sulphate causes the moss to go black by drawing out moisture but has some benefits for your lawn. It reduces the alkalinity of the soil and so creates a better environment for grass growth; it fertilises the soil, and reduces the chance of turf disease. The higher the concentration of iron in the moss killer, the better for your lawn and the worse for the moss. But be aware, that this chemical stains whatever surfaces it comes into contact with.

Most of the moss killers in this review are non-caustic and biodegradable, making them friendly to the environment, your kids and your pets. Always read the ingredients on the package or container to determine what the solution contains. Look for the “active ingredients” that tell you what the working chemicals are.

Application

Always follow the instructions for how to apply your particular moss killer. The instructions will say either “dry” application or “wet” application or give you a choice of these methods.

Dry Granules

For the most successful application of moss killer granules, mow your lawn and remove the clippings to expose all the low-growing moss. Your product instructions will recommend that you use a lawn spreader for this task, and so do we. Calculate the size of the area you want to cover and how much moss killer you need to do so. Pour that amount of granules into the spreader and adjust the setting of the spreader to what the instructions say.

Lawn spreader being used to apply lawn weed, feed & moss killer
Lawn spreader being used to apply lawn weed, feed & moss killer

Wait until the lawn is moist, perhaps early in the morning, and then walk up and down the lawn with the spreader, overlapping the tire tracks from the previous pass. The photos on the package of moss killer may show an alternate way of covering the lawn, so be sure to check that out.

The drawback of applying the moss killer granules dry is that you may put down too much in one spot and end up burning the lawn. Be sure to close the spreader when you turn corners so you don’t distribute heaps of the granules at the ends of each row.

Liquid

You need to choose the concentration of the liquid solution you want to use on your lawn. The instructions on your moss killer container give you recommendations, follow the dilution instructions. For example, if the ratio you want is 1:1, mix 1 litre of the product with 1 litre of water. Many moss killer brands recommend using a watering can with a fine nozzle to spray the moss with this solution in order to better control its application. For small patches of green, a hand spray bottle is fine.

low maintenance lawn
low maintenance lawn

The drawbacks to a wet application are that you have to measure the solution carefully and add it to the right amount of water for the correct dilution; you have to spray the ensuing liquid evenly over the moss and lawn, and you have to be careful of the wind direction.

But don’t be put off by these drawbacks; just follow the instructions carefully and you should be OK.

When to treat moss

The best times to treat moss are in spring and autumn. As most moss killers also contain lawn fertilisers, this coincides with the right times to fertilise your lawn. In spring, treat the lawn in the later half of March and lightly rake out the dead moss in early April. In autumn, apply the moss killer early in the season and then aerate the lawn, ready for winter.

Prevention

While moss itself doesn’t harm your lawn, the conditions that encourage its growth do. Here’s what to look out for to prevent moss from taking over your lawn in the first place or to stop it’s return once you’ve painstakingly removed it.

In this post we go over how to aerate your lawn, we also look at why and when is the best time to aerate a lawn. Read our beginners guide now to learn more.
Aerating lawn to help improve the lawn quality

Inadequate nutrients for grass to feed on make lawns weak and unable to fight. Since moss is rather persistent, it is better if your soil is enriched to give the grass a fighting chance. Regular aeration, reseeding and fertilising is required.

Too much thatch encourages moss growth by shading it from the scorching sun and providing moisture for growth. Scarification is usually employed to get rid of excessive thatch and begin your lawn’s journey back to health.

Wet areas with poor drainage are likely to encourage the growth of moss. This is simply because moss needs a lot of water to be healthy and strong. If you need to, don’t hesitate to seek soil drainage options.

Compacted soil restricts the proper formation of deep roots. Grass with shallow roots has a low chance of surviving and thus gives way to a wider moss infestation with its strong roots. Aerate your lawn at the proper times n the growing season.

Safety

Just our usual reminder to read all the safety precautions on the instructions and to follow them. You’re dealing with chemicals here and, even if they’re biodegradable, it’s better to wear gloves and a mask when mixing them up and applying them. And keep people, especially kids and pets, off the sprayed areas until the safety precautions tell you it’s safe to let them loose on the lawn again.


FAQs

How can I prevent moss from returning to my lawn?

Moss thrives in conditions that harm your lawn; conversely, keeping your lawn healthy creates an environment in which moss can’t grow. You want to avoid having: too thick a layer of thatch between the grass blades and the soil; poorly fertilised soil; soggy areas of standing water; and soil that’s been packed down over time.

In summary, a regular lawn care regime of mowing, watering, and fertilising, with scarifying and aeration in the proper seasons will keep your lawn healthy and moss at bay.

Can I use a standard weed killer on my lawn moss?

Many standard weed killers harm whatever vegetation they come into contact with. Even if you carefully select a weed killer that leaves grass alone, it probably won’t work on moss. Mosses are not like most other plants. They don’t have a central or root system that moves water and nutrients throughout them, so there’s nowhere for the weed killer to circulate through. Moss killers are designed for moss’ primitive structure and won’t harm grass.


Our Final Conclusion

Dealing with moss in your lawn needs discipline and patience, especially if you have recurring moss growth. The moss killers we review give you a good start in removing the moss. Practice safe lawn conditioning methods to encourage proper grass growth and keep the moss from coming back. The best soil conditions for growing a vibrant lawn are the worst conditions for moss to take root in.

Our Best Pick for moss killer for lawns is the Ferromel 20 Iron Sulphate 25KG PREMIUM Lawn Conditioner & Lawn Feed. This is a professional grade product with almost 20% iron compound as the active ingredient.

Pro-Kleen Premium Iron Sulphate Lawn Tonic/Lawn Conditioner & Moss Killer is our Runner-up and is also a premium-grade moss killer. This product is ideal for those with small lawns or a minimal moss problem as it comes in a 2.5kg container that can be resealed.

We have reviews for the products you need to keep your lawn in its best condition so moss can’t take root there. Maybe you need a new electric mower or perhaps you prefer a petrol powered mower. Take a look at the Top 7 Best Lawn Aerators as well as the Best Petrol Lawn Scarifiers. You may also need to consider draining parts of your lawn. Or perhaps you want to give your lawn some extra fertiliser.


Last update on 2021-11-14 / Affiliate links / Images from Amazon Product Advertising API

Welcome to my site, my name is John and I have been lucky enough to work in horticultural nurseries for over 15 years in the UK. As the founder and editor as well as researcher, I have a City & Guilds Horticultural Qualifications which I proudly display on our About us page. I now work full time on this website where I review the very best gardening products and tools and write reliable gardening guides. Behind this site is an actual real person who has worked and has experience with the types of products we review as well as years of knowledge on the topics we cover from actual experience. You can reach out to me at john@pyracantha.co.uk

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