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7 Best Lawn Scarifiers & Rakers to Remove Moss, Cuttings & Weeds (2021 Review)

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The best lawn scarifier will have a working width of at least 30cm, and numerous height options to suit your lawn. It needs enough power to remove dense thatch and moss, yet be light enough to manoeuvre easily. Ideally, you also want a large capacity collection bag and a cable of at least 10m if corded.

Having regularly scarified my lawn for years, I’m extremely familiar with the best models. Whether you want electric, cordless, high-end or budget, this guide will help you find the best scarifier for your lawn. Here are my recommendations…

What is the Best Scarifier For Your Lawn?

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Comparing The Best Lawn Scarifiers & Rakers

Use the dropdown to sort the table by the feature that's most important to you.

  • Best For
  • Working Width
  • No. of Heights
  • Weight
  • Collection Capacity
  • Power
  • Power Source
  • Cable Length
  • Cost
  • Our score
  •  

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In-Depth Reviews of Our Recommended Lawn Scarifiers

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VonHaus 2 in 1 Lawn Scarifier & Raker (1500W)VonHaus 2 in 1 Lawn Scarifier & Raker (1500W)

Best lawn scarifier overall

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.6
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VonHaus 2 in 1 Lawn Scarifier & Raker (1500W) Review

Specifications

  • Working Width: 31cm
  • No. of Heights: 4
  • Weight: 8.5kg
  • Collection Capacity: 40 litres
  • Power: 1500W
  • Power Source: Corded
  • Cable Length: 10m

If a powerful machine is top of the wish list, this VonHaus 2 in 1 Electric Lawn Scarifier and Aerator won’t disappoint. Its 1500 W motor is one of the most powerful that you’ll find in an electric scarifier. In fact, you’d probably have to move up to a petrol engine to find anything better. It’s perfect for very mossy, thatched lawns and grass that hasn’t been touched for a long time.

To offer more value from just one machine, it has interchangeable rollers that fit on a single dual-purpose drum. One for aerating and the other for scarifying. These are easy to switch between, and to change them over you simply need to lift up the grey cover and swap the rollers using the supplied allen key.

Either roller can be used at one of four working depths. This gives you the choice to ‘lightly scarify’ the lawn, or carry out an ‘in-depth purify’, depending on what the area needs. All of the working-depth options are likely to come in handy at some point. For example, it’s good practise to thoroughly scarify the area before sowing lawn seed.

Weighing 8.5 kg, this is one of the lightest scarifiers featured here, making it easy to move around even when the motor isn’t on. The 10 m power cable is a reasonable length and, in terms of comfort, the handle is height adjustable – a feature that does wonders for protecting the spine.

Unlike other models, the 40 L collection bag is big enough to be somewhat useful; it still fills up quickly, but it can be used as a viable option if you’re working on a lawn that doesn’t have too much moss. If you’re scarifying for the first time in a while, it might still be more efficient to detach the collection bag and rake up the debris after scarifying.

Pros

  • Very effective at clearing lawn, easy to notice from how much is collected.
  • Easy to change rollers between aerating and scarifying.
  • The aerator tines can leave lines cut in the soil to help with reseeding.

Cons

  • May be a little narrow for larger lawns.
  • The collection bag needs to be emptied very frequently (can fill up even within 5 mins).
  • The handles are a little top-heavy and may make it a bit unbalanced when left to stand.
  • Works more effectively as a scarifier than aerator - the metal rake tines are not overly strong.
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Black and Decker B/DGD300 Lawn RakerBlack and Decker B/DGD300 Lawn Raker

Best lightweight budget option

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.42
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Black and Decker B/DGD300 Lawn Raker Review

Specifications

  • Working Width: 30cm
  • No. of Heights: 3
  • Weight: 7kg
  • Collection Capacity: 30 litres
  • Power: 600W
  • Power Source: Corded
  • Cable Length: 10m

Gardening can be pretty taxing work sometimes – on the knees, arms, and especially on the ol’ back. So, when a lightweight tool like the 7 kg Black & Decker GD300 scarifier comes along, it tends to be a double win: a machine that is designed to cut down on time and effort, that’s also light enough to be easier to use than heavier models.

Using a compact 600 W motor, Black & Decker have been able to make the GD300 several kilograms lighter than most other scarifiers. Of course, this means it doesn’t have quite the same power as a 1100 W motor, but it’s still well equipped to scarify and rake the lawn.

With three adjustable heights, the lowest setting will remove thatch and debris embedded in the lawn, the second suits general maintenance raking, and the highest setting collects leaves and grass clippings. Whereas, with some scarifiers, the deeper settings are too harsh and end up not getting used, the different levels on this GD300 all serve distinct and useful functions.

Featuring a 30 cm raking width, this model is best suited to small/medium gardens. Also, it’s ideal for weaving around garden ornaments or getting to work on narrower strips of lawn.

In addition, there are a couple of safety features in place which is always reassuring when using power tools. The automatic switch-off means that the motor will stop when you let go of the handle, and there are clips on the from for cable-management, to keep the 10 m lead out the way whilst working.

To conclude: this Black & Decker GD300 scarifier and raker works well in smaller areas, it’s lightweight and doesn’t cause strain; however, if you have a bigger garden you might want to consider a larger model.

Pros

  • All three height settings are useful, using them progressively pulls out a lot of thatch each time.
  • Easily pulls out moss from lawns, even when they haven't been scarified for years.
  • The open collecting bag means moss/debris can be picked out by hand and emptied into wheelbarrow etc., saving trips to compost heap.

Cons

  • Some users find it easier to manoeuvre without the collecting attachment - but then moss needs to be raked afterwards instead.
  • Can bounce around on bumpy lawns and longer grass due to light weight.
  • The collector is quite small and moss doesn't automatically move to the back of it - need to manually push moss to back.
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AL-KO Comfort 38E 2-in-1 Lawnrake & ScarifierAL-KO Comfort 38E 2-in-1 Lawnrake & Scarifier

Best scarifier for large gardens

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.32
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AL-KO Comfort 38E 2-in-1 Lawnrake & Scarifier Review

Specifications

  • Working Width: 38cm
  • No. of Heights: 5
  • Weight: 14kg
  • Collection Capacity: 55 litres
  • Power: 1300W
  • Power Source: Corded
  • Cable Length: 12m

When the going gets tough, it helps to have a hardy machine like the AL-KO Grass Scarifier on hand. With the largest working width of all the scarifiers featured here, at 38 cm, it’s up to the challenge of tackling even medium/large gardens. It also has a 1300 W motor that powers a scarifying roller with 14 steel blades, efficiently ripping up moss, thatch and weeds from the lawn.

Complete with a separate raking roller, with 24 steel spring tines to aerate the grass, this 2-in-1 unit is well equipped to improve the health of your lawn. Both functions increase the amount of oxygen and nutrients that can reach the grass, resulting in it growing back healthier and greener. No tools are required to switch between rollers, so there’s no hassle involved in changing between tasks.

There are 5 depth options in total, which can be used with both the rake and the scarifier to choose the correct level for your lawn. This also gives the options to work through them methodically, without starting too deep straight away.

Weighing in at 14 kg, it’s clear that this is a bigger machine than others featured here. It requires more effort to move around, as well as take out from storage, but has a construction that feels sturdy and will also maintain a relatively even work coverage even on bumpy areas.

The 55 L collection bag has the biggest capacity of all the scarifiers mentioned, allowing for a bit more ground to be covered before emptying. As with all scarifiers, the bag does fill up relatively quickly; however, it is easy to remove and empty. One worthwhile tactic is to keep a wheelbarrow nearby, making it quicker to dump the clippings and continue with the job.

If you have a bigger garden to deal with, you may feel sceptical about the idea of a mains-powered tool. But, this AL-KO model comes with a 12-metre cable, plus enlarged air vents to prevent overheating. This makes a significant difference when tackling a large area.

Pros

  • Can be used on larger lawns, even up to around 3/4 of an acre, without burning out.
  • Very straight forward to switch between scarifiying and raking roller - no tools and doesn't require excessive strength.
  • The rake attachment is a great tool for general maintenance as not as harsh as scarifier.

Cons

  • Can become 'top' heavy, especially when bag is full, and tip backwards if not held.
  • Difficult to use without the bag fitted as it's difficult to prop open the debris chute.
  • Starts powerfully as soon as turned on, so need to be careful about settings to avoid accidentally scalping the lawn on start up.
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Einhell GE-SC 35 Cordless ScarifierEinhell GE-SC 35 Cordless Scarifier

Best budget cordless scarifier

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.2
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Einhell GE-SC 35 Cordless Scarifier Review

Specifications

  • Working Width: 35cm
  • No. of Heights: 3
  • Weight: 9.74kg
  • Collection Capacity: Not listed
  • Power: 2 x 18V Batteries
  • Power Source: Cordless
  • Cable Length: n/a

Einhell is a well-recognised name in the gardening world, renowned for making high-quality tools that work just as you need them to. The Einhell Scarifier and Lawn Aerator is no exception; a durable, hard-working machine that gets down into the lawn, pulling out moss and untangling grass.

Suited to use on small- to medium-size gardens, this scarifier uses its 16 stainless-steel blades to remove moss and weeds right down to the roots. The result? A beautifully clear lawn that will start looking progressively healthier as the grass begins to breathe again.

Despite its high-power motor, this machine is easy to manoeuvre and also handles well. At 9.74 kg, it doesn’t vibrate or bounce around, but is still sufficiently lightweight for moving easily out of storage.

If you find yourself struggling with back pain from using tools that are calibrated to the wrong height, this Einhell scarifier has been designed to avoid this problem; the height of the adjustable handles can be altered using the quick-release levers. It’s a simple solution, but works wonders for improving user comfort.

The three adjustable depth settings offer a lot of choice in terms of how you can approach your lawn – the first height is less demanding on the battery meaning you can cover more area if you only need a light go-over. It helps to work down the settings gradually if the lawn is in need of some real TLC. The third setting provides an extremely thorough service; it’s reliably efficient at yanking out moss, weeds and matted grass.

Unlike some similar machines, Einhell have designed their scarifier with deliberately wide wheels. These have been chosen to exert less stress on the lawn meaning you don’t need to worry about damaging it with unsightly wheel lines.

The only downside comes if you don’t already own any of Einhell’s Power X-Change tools. This scarifier comes without batteries or a charger, but if you already own compatible Power X-change machines you’ll be able to use the batteries from them.

If not, it can be a bit of an expensive initial investment, requiring you to buy two batteries and a charger. The collection bag also needs to be bought separately if you want one, but some customers choose to just rake the grass afterwards and bag the debris themselves.

Pros

  • On its lowest depth setting it pulls up nearly all unwanted vegetation: moss, matted grass, etc.
  • The handling is good, with the unit moving evenly and straight across the lawn.
  • The adjustable handle means gardeners who are 6' or slightly taller don't have to bend over.

Cons

  • Comes without batteries or charger so an additional purchase is required.
  • Collection bag is not included - can be used without if you rake afterwards, or one needs to be purchased.
  • The battery runs down quicker on the deeper settings than it does on the shallower ones.
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Ryobi RY18SFX35A-0 Cordless ScarifierRyobi RY18SFX35A-0 Cordless Scarifier

Best high-end cordless scarifier

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.16
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Ryobi RY18SFX35A-0 Cordless Scarifier Review

Specifications

  • Working Width: 35cm
  • No. of Heights: Not listed
  • Weight: 10.7kg
  • Collection Capacity: 55 litres
  • Power: 2 x 18V Batteries
  • Power Source: Cordless
  • Cable Length: n/a

When scarifying the lawn, it’s important to work at a depth which is suitable for your garden; too shallow, and nothing will get pulled out, too deep and you could risk damaging your lawn.

With this in mind, Ryobi have created the Ryobi ONE+ Cordless 35cm Brushless Scarifier, a quality machine with four depth settings to help achieve the perfect finish.

Whether your lawn is heavily compacted with moss and grass, or more sparsely congested, the settings on this Ryobi scarifier make it straight forward to work at the appropriate depth without scarring the lawn for life.

Additionally, the 35 cm cutting width is well-sized without being impractical – it’s easy enough to move the scarifier about the garden, fitting into tighter spots around ornaments and flowerbeds, without being so small that jobs take a long time to complete. Adopting a slow and steady pace allows the 16 stainless steel blades to pick out a lot of moss and thatch from the lawn. And, if used with 5 Ah batteries, which last around an hour, a lot of area can be covered from one charge.

As you may have deduced, batteries don’t come included. So, it’s up to the customer to purchase compatible Ryobi ONE+ batteries and a charger. Of course, as is often the way with these ‘bare’ products, if you already have tools in the Ryobi ONE+ range, the batteries can be transferred to this machine.

Storage is straight forward as the handles fold down to save space, they’re also height adjustable which generally makes the machine more comfortable to use for an extended time. At 10.7 kg, it’s a fairly ‘average’ weight for a battery-powered scarifier, holding its own without being overly heavy to move about.

Pros

  • Good power usage: will last for at least 30 minutes with 2 x 4 Ah batteries, and 1 hour with 2 x 5 Ah batteries.
  • Assembly is straight forward - ready to go in around 15 mins.
  • Users report that it can pull around 120 L of moss etc. in 15 minutes.
  • Noise and vibrations levels are not disruptive.

Cons

  • Collection bag does not come included and needs to be bought separately if required.
  • Requires batteries of at least 4 Ah to have sufficient power.
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Einhell GC-SA 1231/1 Electric Scarifier & AeratorEinhell GC-SA 1231/1 Electric Scarifier & Aerator

Best scarifier and aerator

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.04
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Einhell GC-SA 1231/1 Electric Scarifier & Aerator Review

Specifications

  • Working Width: 31cm
  • No. of Heights: 3
  • Weight: 9kg
  • Collection Capacity: Not listed
  • Power: 1200W
  • Power Source: Corded
  • Cable Length: Not listed

For a versatile machine that will allow you to scarify, aerate and rake the lawn, without the need to purchase any additional attachments, the Einhell GC-SA Electric Scarifier is a great tool that comes with plenty of accessories.

Many other units only come with the scarifying drum, with the option to purchase aerating and raking tools. Having them all provided from the start helps keeps costs down and allows you to give your lawn any necessary treatment from the get-go.

Equipped with a powerful 1200 W motor, this scarifier runs off mains power meaning there are no batteries to charge. The supplied cable is around 5 m long, so depending on the size of your garden you may need to use an extension. This Einhell model is generally considered suitable for gardens up to 300 m².

The aerating/rake attachment has 42 thin tines which easily comb through the grass and rid it of any debris. There are 3 depth levels to choose from, so on the highest setting you can rake the grass more generally, and on the lowest setting it will do more thorough work. As always with aerators, you just need to be careful not to use too low a setting and damage the lawn.

The scarifying attachment has 8 stainless steel double blades that pierce down into the soil to allow the grass to have better availability of nutrients. These blades only need to be used once or twice a year, but can dramatically improve the appearance of the lawn in the long run.

Overall, this scarifier/aerator is a good option if you want a mains-powered machine that offers the flexibility of having different functions.

Pros

  • Very efficient at removing moss and thatch from the lawn.
  • Quick to assemble in around 15 minutes.
  • The collapsible handles make it easy to pack into storage.

Cons

  • A tool is required to change over drums from aerator to scarifier - may need to supply own allen key or screwdriver.
  • There is no reference to indicate what height level you are on - trial and error to learn.
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VonHaus 2 in 1 Lawn Scarifier & Raker (1300W)VonHaus 2 in 1 Lawn Scarifier & Raker (1300W)

Best value scarifier

Design
Ease of Use
Manoeuvrability
Power
Value for Money
Overall
4.24
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VonHaus 2 in 1 Lawn Scarifier & Raker (1300W) Review

Specifications

  • Working Width: 31cm
  • No. of Heights: 4
  • Weight: 10.4kg
  • Collection Capacity: 28 litres
  • Power: 1300W
  • Power Source: Corded
  • Cable Length: 10m

If you have a particularly dense covering of moss and thatch, the VonHaus Lawn Raker has the deepest working height featured on this list. Getting down to -15 mm, it’s a good option if you’ve used similar tools in the past that just don’t infiltrate far enough. There are four working depths in total: -15 mm, -11 mm, -7 mm and +1 mm.

This range of adjustable settings result in a machine that is just as equipped to tackle mushy autumn leaves as it is to clear up summertime grass clippings.

With a 1300 W motor, this is up there with some of the more powerful machines mentioned here, yet its price is very reasonable by comparison. This electric rake effectively and efficiently clears moss, thatch and leaves from the lawn, allowing water to drain and avoiding a build-up of decaying material.

Best suited to small/medium lawns, the 31 cm working width ensures the job won’t take all day. However, due to the smaller size of the 28 L collection bag, anyone with a larger garden may find themselves spending more time emptying the collector than scarifying.

At 10.4 kg, this sits just at the lighter end of the scale, making it comfortable to use and resulting in a decent width-to-weight ratio. It can be used comfortably for longer periods of time, and there are a couple of safety features that make it more secure to use as well.

There is a two-stage start-up in place, preventing accidental activation, and a thermal cut out mechanism to avoid overheating. Features like this start-up system help to bring a sense of security when using larger gardening tools, especially around pets and young children.

Pros

  • Removes thatch and moss from lawn in a quarter of the time compared to hand raking.
  • Despite light weight is also sturdily constructed and feels robust.
  • Easily to assemble with everything set up in around 10 minutes.

Cons

  • The collecting bag can be more of a hindrance than worthwhile - many use it without.
  • Fills up the front of the bin, not the back, so debris may need to be physically pushed back to make space.
  • Balance of machine isn't great - can be top heavy and topple if handle not held.
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Things to Know Before Buying a Lawn Scarifier

So, you’re thinking about buying a lawn scarifier? Great idea!

Scarifying your lawn will protect the grass and help keep it looking smart all year round.

The condition of your lawn will dictate what type of scarifier you need.

Below I have assembled some helpful information to help you make an informed purchase.

What does a Lawn Scarifier Actually Do?

Firstly, it may help you to know that a ‘dethatcher’ and a ‘scarifier’ are the same thing.

Scarifying is the process of removing debris (moss, leaves, grass cuttings) from the lawn by catching it in bladed teeth.

The other function of a scarifier is to aerate the soil. It does this by piercing down into the lawn’s surface.

But why is that important? Well, the more oxygen in the soil, the healthier your grass will be! In addition, scarifiers also help keep weeds at bay. They really are exceptionally useful little machines!

Understanding ‘Working Depth’

Ideally, you want a scarifier with a selection of working depths.

Scarifying (removing the dead moss and thatch) isn’t a deep action – it only needs to be deep enough to yank out the thatch.

When you have a choice of working depths, you can start on the highest, going down through the settings until you find which is best for collecting the debris. It is much better to go slow, rather than choose too deep a setting to start with and puncture your lawn.

If your scarifier has depth options like “-5 mm” this means it can be used as an aerator as well. Deeper teeth aerate the lawn by pricking holes in it. This is good as it allows rain and oxygen to replenish the grass, so look for adjustable heights.

Look Out for Their Teeth!

When it comes to scarifiers, the more teeth the better! The teeth do exactly what you’d expect – pierce down into the lawn aerating it and collecting debris.

Bear in mind that lots of long teeth will make a mess of your current lawn – but this is temporary. The grass will grow back quickly and it’ll look so much better for the rain and oxygen.

Look for good-quality metal teeth. Stainless steel or tempered steel teeth will last longer than plastic ones, for example.

You can buy replacement teeth for some machines. If you’re splashing out on a pricey model, it’s worth checking if you can buy spares before you commit to the purchase. Also, check how much replacements cost – some brands are more expensive than others.

Choosing the Best Cutting Width

The larger the cutting width, the less time it’ll take to scarify your lawn. Simple.

Most people are looking to get these types of jobs done quickly, so the idea of a wider machine to cut down time is appealing.

Out of the models I reviewed, the AL-KO Comfort 38E has the widest rake width at 38 cm.

One thing to bear in mind, however, is that a wider width tends to mean a bigger machine. Which also generally results in a heavier machine. The aforementioned Flymo model weighs 12.6 kg. Whereas the Black & Decker GD300 has a rake width of 30 cm (only 4 cm less) and weighs a mere 7 kg.

You’ll just need to weigh up the pros and cons of width vs. weight and see which model best fits your needs.

Finding a comfortable scarifier

Scarifiers do require a bit of user effort. They need to be manhandled around corners and can feel a bit lively sometimes too.

Therefore, one thing to make sure of is that you are in control. Make your life easier by choosing one that suits your height. A height-adjustable handlebar is worth its weight in gold.

Ergonomic, non-slip handles are also a blessing, unless you have the grip of a boa constrictor!

Finally, that brings us back around to the topic of weight. Be realistic about what sort of weight you can handle. You may find it’s better to get a slightly smaller, lighter option that you won’t tire of using (like the Black & Decker GD300), rather than a hefty, powerful 15 kg model which is exhausting to manoeuvre.

Petrol vs. Electric Scarifiers

There are pros and cons to both petrol- and electric-powered scarifiers

  • Petrol scarifiers are powerful, versatile and great for large lawns. They are ideal to use in areas with lots of weeds because they aerate effectively and are heavy duty. An electric scarifier may just “bounce off” in dense, heavily weeded spots. Whereas a petrol scarifier will grind it out and finish the job. However, petrol scarifiers are heavy, emit fumes, and can be time-consuming to start. They are noisy, so you may want to wear ear defenders, and will require maintenance such as filter and spark-plg changes.
  • Electric scarifiers are quiet, lightweight and cost effective. They are great to use on small- to medium-size lawns. They do a great job of hauling the moss and thatch from your grass with minimal effort on your part. They won’t need re-filling like a petrol one either. However, they’re not always as powerful as petrol scarifiers and you may find yourself restricted by the cord length.

Manual Hand Scarifiers

Manual scarifiers are quiet, easy to store and don’t require any maintenance other than scrapping the rust off.

They’re great for tackling jobs in small gardens and often work surprisingly well.

A simple rake and a push-along aerator could also do the job. You could even buy some aerating shoes that spike the grass as you walk around.

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Lawn Scarifier FAQs

Are scarifiers worth the effort?

Yes. Scarifiers really can improve the appearance of your lawn.

It can be tempting to neglect the lawn, especially when it’s fine weather and there are more exciting things like BBQs to be thinking about. However, you should always make time to scarify because eventually your daisy-strewn lawn will turn brown, soggy and look awful because dead thatch is killing the grass.

Does a scarifier make a difference?

Yes. Scarifiers will keep your grass looking healthy and green for longer.

If you never scarify the lawn, weeds, grass clippings, moss and dead plant matter clog up the surface. As a result, rain and light can’t get through. The grass doesn’t get enough nutrients and eventually it will die off.

If your lawn is developing large brown patches, it’s definitely time to scarify. This means water isn’t getting through to hydrate the new shoots.

After you’ve scarified the grass it might look… how to put this nicely… a bit awful! But don’t worry – grass grows back at lightning speed and it’ll soon be greener and fresher than ever.

How do I use a lawn scarifier?

 For best results (and the greenest lawn!), you should scarify once or twice a year.

  1. First, kill any live moss. This prevents the spores flying all over the garden and taking over. Use a good quality moss killer and wait until its gone brown.
  2. Choose a dry day so the lawn doesn’t turn into a mudbath. Ensure you’ve given the grass a cut a few days beforehand.
  3. For the first round, choose the highest setting on your scarifier. Push it around just as if you were mowing the lawn.
  4. For the second pass, use a lower setting and so on. If you do the second pass on a parallel route, you’ll get better coverage.
  5. Once you’ve pulled out the dead thatch you might find there’s little grass left! Now is the best time to re-seed.

When should you scarify your lawn?

You should scarify once or twice a year. Once in spring, when the grass is growing strongly to start the season off right, and once in autumn to remove the year’s waste (only if it needs it!).

The grass needs to be actively growing before you scarify, and you should mow before for best results. If the weather is too hot, cold, dry or wet, your lawn will not recover properly.

For your lawn scarifying to be the most effective, the soil needs to be both warm and moist. Spring and Autumn are the best times for these conditions.

What is the difference between a lawn raker and scarifier?

Rakers are gardening tools designed to remove moss and debris from lawns. This will promote healthy growth and can keep your garden looking neat.

Scarifiers also remove moss, leaves and debris from the lawn, but their design gives them another benefit. While rakers can comb through the lawn, scarifiers have steel blades that cut the soil. This aerates the lawn, allowing it to breathe so nutrients can reach the soil beneath the grass.

Should you cut the grass before scarifying?

Yes. For best results, you should mow your lawn before scarifying.

Most people choose to gradually reduce the height of the grass in the week before scarifying, so the grass isn’t shocked suddenly. If your lawn has any weeds, you can remove them manually without weed killer.

What to put on lawns after scarifying?

Once your lawn has been scarified, you should use a fertiliser to give the lawn the best chance of recovery.

Purchase a fertiliser suitable for the time of year. Autumn fertilisers release nutrients slowly for long term health and growth in the winter. A spring fertiliser will encourage your lawn to grow and recover rapidly.

If there hasn’t been much rain, you should water your lawn in the few weeks after scarifying. If scarifying has revealed any bare patches, you should reseed these areas.

How long does it take for scarified grass to heal?

A few weeks to 4 months. It depends on the time of year, weather, and the condition of your lawn before scarifying. If the weather is cold and dry, your lawn may take up to 4 months to fully recover. In warm conditions, your lawn should bounce back within a few weeks.

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Sources

  1. Landschoot, Peter. “Managing thatch in lawns”. Penn State College of Agricultural Sciences.
  2.  “Stolon”. Dictionary.com
  3. “rhizome | Description, Functions, & Examples”Encyclopedia Britannica.
  4. “Backyard Gardener: Understanding Plant Roots”University of Arizona Cooperative Extension.
  5. Lawn Thatch. Wikipedia

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