In this guide we’ll look at the best moss killers for UK lawns.
I’ve compared effectiveness, timing, ingredient safety and cost
to give you my top recommendations.
What Is The Best Moss Killer?
In a rush? Here’s my top choice…
Eliminates moss and gives your lawn a boost!
The Tradefarmni Iron Sulphate Premium Moss Killer is my top pick for both eliminating moss and fertilising your lawn. This pack contains enough moss killer for a whopping 5000m² of lawn, and it can be applied both wet and dry.
Everything I Recommend
More Detailed Moss Killer Reviews
Maxicrop Moss Killer and Lawn Tonic Review
This Maxicrop Moss Killer and Lawn Tonic contains 17 % iron sulphate, 2 % nitrogen, and a healthy dose of natural seaweed.
But what does this do? Well, the iron sulphate kills the moss, whilst the nitrogen and the seaweed work to invigorate the the grass and improve its health. This is a winning pairing; these components encourage fast regrowth in the bare patches left by the dead moss.
This moss killer is fast acting and effective, as well as clean and easy to use. 310 ml is sufficient to treat 10 m², so this pack should cover 80 m² of lawn. You simply mix the liquid with water and apply with a sprayer or watering can with a fine rose.
This is a slightly more costly option compared to some products on this list; however, it is very effective and blackens almost all moss within days. What’s more, it improves the health and colour of the lawn. I would also add that it is also the best moss killer to use if you plan to reseed the lawn, because its liquid form does not linger for as long as granular products.
Miracle-Gro EverGreen Moss Remover Lawn Food Review
The Miracle-Gro EverGreen Moss Remover Lawn Food is one of my top recommendations for the best moss killer.
This lawn food utilises high end technology to both feed your lawn and control moss. It contains naturally occurring bacteria that eats through the dead moss, so there’s no need to rake it away. It’ll also help prevent future regrowth.
This lawn feed and moss killer contains extra magnesium that gives your lawn a gorgeous green finish within just 7 days. It contains an organo-mineral based formula to enrich the root zones, leading to a nourished lawn. It won’t stain paths, patios, terraces nor clothing.
Best of all, this moss killer is safe for families. Both pets and children can re-enter the treated area once it’s watered in.
In terms of value for money, this lawn feed ticks all the boxes. It comes in 3 different sizes to treat different size lawns, either 50m², 100m² or 200m². If you’re looking for a quality combination of both lawn feed and moss killer, the Miracle-Gro EverGreen Moss Remover Lawn Food is my top recommendation!
A1Lawn Lawn Feed, Feed & Moss Killer Review
The A1Lawn Lawn Feed, Weed & Moss Killer is a must-have for a luscious green lawn, free of weeds and moss. This product has been specially made to accelerate root development, leading to faster and stronger lawn, while also eliminating unwanted weeds and moss.
With a double strength formula containing 3 active weed killers, this product saves time and effort when it comes to your lawn care. The low application rate means just one bag goes a very long way, with 10kgs covering 250sqm.
I found this weed and moss killer to be fast acting and easy to use, although kids and pets should be kept away until the granules are fully dissolved. It produces best results between March and October.
If you’re looking for an effective and specially formulated lawn feed, weed and moss killer in one, the A1Lawn Lawn Feed, Weed & Moss Killer is my top recommendation!
Scotts Miracle-Gro EverGreen Lawn Food and Moss Killer Review
The Scotts Miracle-Gro Lawn Food is a four-in-one moss killer, lawn fertiliser, weed killer and drought repellent – perfect for improving the quality of any lawn!
This moss killer has a WaterSmart formula; it helps the soil and grass absorb water and nutrients more easily, therefore meaning they resist heat, drought and other stresses. The N+ formula boosts greening power, offering visibly greener lawns within just 7 days. All the while, it works away to rid your lawn of moss for good!
It comes with a built-in spreader for easy application, so one less thing to worry about, and it can be used any time from April to September.
Proctors Autumn and Winter Lawn Feed Moss Killer Review
The Proctors Autumn and Winter Lawn Feed Moss Killer is my top recommendation if you’re looking for a moss killer for the colder months. This lawn feed has been specially formulated to treat your lawn during the autumn and winter.
This moss killer contains iron to help kill and control moss, while it also contains a range of nutrients to treat your lawn with the love it deserves! This product uses a micro-granular formula, making it better value for money than others on the market. In fact, this 20kg sack of moss killer can treat a 571m² lawn!
I found this moss killer delivered fast results, best when applied every 6 weeks. If you’re looking for a fast acting and good value moss killer for the colder months, the Proctors Autumn and Winter Lawn Feed Moss Killer should be at the top of your list!
Westland Aftercut Lawn Feed, Weed & Moss Killer Review
The Westland Aftercut Lawn Feed, Weed & Moss Killer is the most versatile all-round lawn feed, suitable for any lawn.
This easy to use lawn treatment helps with moss control, and it contains a high level of nitrogen for controlled growth. The blend stimulates growth, eliminates moss and even eradicates weeds. It’ll deliver a gorgeous green finish your neighbours will be envious of!
I found this moss killer very easy to use, although you should keep pets and children off the treated area until it’s been watered in and dried. This bag covers 500sqm of garden, so it’s suitable even for large lawns.
If you’re looking for a lawn feed, weed and moss killer in one, designed for the spring and summer months, the Westland Aftercut Lawn Feed, Weed & Moss Killer is my top recommendation!
Lawn Gold Lawn Fertilizer & Moss Remover Review
The Lawn Gold Lawn Fertilizer & Moss Remover is my top recommendation for an organic-based lawn fertiliser. This fantastic product is chemical-free, and both child and pet safe.
Of course, being organic, this moss remover is bound to be more expensive than others on my list. However, I found the results very impressive, and there’s no raking needed of the treated moss. It also fertilises your lawn, using slow release technology, keeping your lawn healthy and thick throughout the season.
This lawn feed covers up to 100sqm of lawn, and both children and pets are allowed back onto the lawn once the product is watered in. There’s no dangerous or clothes-staining chemicals to worry about, but it still contains all the nutrients needed for your lawn to grow thick and healthy.
If you’re looking for the best organic-based fertiliser, the Lawn Gold Lawn Fertilizer & Moss Remover is my top choice!
Things to Know Before Buying Moss Killer
Moss is a common problem in gardens for a variety of reasons. It can give the lawn an uneven colour and feel spongy to walk on.
Moss often occurs when there is sparse grass cover, on compacted or waterlogged soil, in shady areas, or on soil that is lacking in nutrients or too acidic.
Moss killers are an easy and effective way to rid your lawn of that ugly moss. The moss will die quickly after treatment and can then be raked or scarified out.
So, if you want to start using moss killer, read these helpful tips to help you make an informed purchase:
If allowed to get out of control, moss can overrun your lawn. It often outcompetes grass and will steal valuable water and nutrients away. As a result, moss will spread, killing off your grass.
A lot of moss on the lawn will look patchy and spongy, it won’t give you the smooth, well-groomed lawn that you’re after.
Using a moss killer will stop this spread, and the majority of them will actually fertilise your lawn and help improve its appearance.
Moss requires a moist environment to thrive; unlike most other plants, it doesn’t have roots to transport water and nutrients. The best way to treat moss is to dry it out completely, and this is how a moss killer works. Most moss killers contain iron, which can dry out the plant over time.
The best moss killer products will also improve the health of your lawn. If you have a lot of moss you may need to repeat the application. Most moss killers contain iron sulphate which kills the moss as well as greening up the lawn. At lower concentrations, these products can be used as a lawn tonic.
Both liquid and granular form moss killers are very effective.
One factor that may affect whether you choose one or the other is the type of spreader you have available.
If you already have a granule fertiliser spreader, you may be more comfortable with granular moss killer. Equally, if you normally use a liquid sprayer when fertilising, or have a watering can with a fine-holed rose, it might suit you better to use liquid moss killer.
Pros of Liquid Moss Killer
- If applied properly, gives very even coverage
- Easily and quickly absorbed
- Easy to apply
Cons of Liquid Moss Killer
- May not last as long in storage as granules
- Shouldn’t be used before rainy weather
Pros of Granular Moss Killer
- Can be ‘slow release’ – lasts longer and may be more effective
- May be cheaper than liquid products
Cons of Granular Moss Killer
- May burn the grass if not carefully and evenly applied
- Can be more difficult to apply evenly
All of the moss killers featured in these reviews also advertise themselves as lawn feed. Personally, I think it’s best to buy a moss killer combined with lawn feed because when moss dies off it can leave sparse patches. If the lawn is treated at the same time, it won’t take long for the grass to grow and fill in these areas.
However, if your lawn has been really overrun by moss, you might want to consider buying a specified moss killer. This will be the best way to really tackle a carpet of thick moss.
Moss Killer FAQs
Use a high-quality moss killer.
Moss relies on moisture to stay alive, so the best way to eliminate it is to dry it out completely. Many traditional methods such as power washing and bleaching won’t get rid of it for good.
Follow the instructions of your moss killer carefully, and check exactly where your moss killer can be used. If your first application doesn’t successfully eliminate the moss, you may need to treat the area more than once.
Most moss killers will deliver results within anywhere between a few hours and a couple of weeks, depending on the product you use.
Ideal times to apply moss killers are in spring or autumn.
If applying in spring, do this as soon as the weather warms and the grass begins to grow, ideally before the likelihood of sporing in April. If you want to apply the treatment in autumn, wait until the dry weather is over and the conditions are wetter, September is usually about right.
Wait until the moss is dead and black before raking, otherwise, you can spread pieces of live moss and spores over to another area of your lawn.
It’s best to wait a few weeks before applying a second application of moss killer, especially if it contains iron sulphate as an overdose of this can scorch the grass.
It is best to apply these products over the whole lawn as they increase the acidity of the soil and this can affect the colour of the lawn. Part applications could result in a variable colour in your grass and a patchy and uneven effect.
- Improve drainage and aerate the lawn – if your lawn has a tendency to become waterlogged or compacted this will encourage moss.
- Always feed your lawn in autumn to help prevent moss taking over in the damp winter months. Regular feeding keeps your grass in tip-top condition making it harder for moss to find a way in.
- Avoid cutting your grass too short as this can damage it and allow moss to get a foothold.
Iron sulphate is safe to use as long as you follow the guidance on the pack carefully. You should, in general, keep pets and children off the area for 24 hours after use. If you want to use moss killer on patios or paths then test it on a small inconspicuous area as the product can stain. Wear gloves and protect the areas where you mix the product to prevent staining and remember to check your shoes before going indoors as the products can stain floors and carpets.