Best Mulching Blade for 2025: Sorted By Mower Deck Size

Mulching blades are a great way to keep your lawn healthy. Looking for the best mulching blade to put your mower? Look no further! This post will give you in-depth reviews of the best blades on the market. We have sorted them by deck size and type of mower, so you can find the perfect blade for your needs. Read on to find the best blade for your needs!

What Is Mulching?

Mulching is a gardening technique that involves leaving grass clippings on the lawn to break down and return nutrients to the soil.

The process begins by finely cutting the grass with a mulching blade that produces small clippings that break down very quickly. Once these clippings are dropped onto your lawn, they gradually break down over time and release valuable nutrients into the soil, improving the health and vitality of your turf.

Not sure if you should mulch or bag? Read our post that looks at the pros and cons of each method.

How Do Mulching Blades Work?

Mulching mowers are a unique type of lawnmower designed to turn your grass clippings into nutrient-rich mulch. They work by creating a stream of air to lift the cut grass back up towards the blades.

This means the blades of grass are cut multiple times before they fall back onto your lawn. The result is much finer grass clippings that break down very quickly to feed your lawn.

This short video shows you how mulching mowers work.

Best Mulching Blade For 42 inch Deck

Oregon Mower Blades, Gator G3

Looking for a top-quality replacement blade for your 42-inch deck mower? The Oregon Mower Blade Gator G3 is your best bet.

This heavy-duty blade is designed for long-lasting performance. It features a superior cutting edge that will make quick work of any lawn. The angled teeth are designed to redirect the airflow and keep the clippings in front of the cutting edge. This means finer clippings.

The high lift blade also cuts on the first pass, saving you time and effort as you won’t have to go over your lawn twice.

Superior mulching capabilities mean you won’t even need to bag your clippings. Simply mulch them back into the lawn for a healthy and green garden. The Gator G3 can efficiently deal with wet, dry, and sandy turf.

The Oregon Mower Blade Gator GIII is made to a 26-point quality checklist, so you know it will be premium quality. It’s not simply a replacement blade; it’s a quality upgrade.

Best Qualities

Get more out of your mower with these heavy-duty replacement blades.
Superior cutting edge for a clean cut every time
High lift blade for faster, more efficient cutting
26 point quality checklist for excellent quality
Cuts through wet, dry, and sandy turf with ease
Spend less time bagging clippings or cleaning up after your mower.

Things you should know before buying

These blades have a center hole with a five-pointed star mounting, so check that this will fit your mower before you buy.
Some reviewers commented that they got finer clippings if they set the mowing deck to cut the grass shorter than usual.

Are you looking for a top-quality replacement blade for your 42-inch deck mower? The Oregon Mower Blade Gator G3 is a great option. This heavy-duty blade is designed for long-lasting performance. It features a superior cutting edge that will make quick work of any lawn. So don’t wait any longer; buy a set today!

MaxPower 561714B 2 Blade Mulching Set

The MaxPower 561714B 2 Blade Mulching Set is the perfect solution for those who want a clean, evenly cut lawn without all the hassle of bagging.

These blades are made of high-quality carbon steel, so they’re built to last. You won’t have to worry about them breaking or bending under the strain of cutting through thick grass. They’re also well balanced and won’t vibrate, so you’ll get a clean, even cut every time.

Made in the U.S.A., these blades produce fine clippings that quickly decompose, eliminating the need for bagging.

Reviewers say the blades power through grass quickly and easily, producing a beautiful cut. So ditch the bags and give your lawn the care it deserves with the MaxPower 561714B 2 Blade Mulching Set.

Best Qualities

Provides a clean, even cut on your lawn.
Blades are designed to handle wear and tear.
Made in the U.S.A.
The blades are well balanced and don’t vibrate.

Things you should know before buying

These blades have a 5-point star center hole.
Several reviewers mentioned that they had to sharpen the blades before using them. This isn’t a huge deal, but it shouldn’t be needed.
A few reviewers said they noticed some clumping at first, but raising the deck solved the problem.

When it comes to your lawn, you demand the best performance and durability from your mulching blades. The MaxPower 561714B 2 Blade Mulching Set is engineered to deliver a first-class mowing experience every time.

These blades are made of top-quality carbon steel, so they are strong and durable enough to take on any challenge while still providing a clean and even cut. So why not go ahead and give them a try? We think you’ll be impressed.

Finding this post helpful? Read all our buyers guides.

Best Mulching Blade For 48 inch Deck

Maxpower 561735XB Commercial Mulching Set

Looking for a top-quality mulching set that will give your lawn the perfect cut every time? Look no further than the Maxpower 561735XB Commercial Mulching Set.

This set is made in the U.S.A. to exacting standards. It features a greater cutting surface for increased mulching performance, sharpened cutting teeth for a precision cut, and a centrifugal air lift design for uniform chopping distribution.

These are commercial-grade blades, and reviewers commented that the blade felt substantial and well made. Many people loved how well these blades cut in wet or dry conditions. They also worked well in challenging sandy areas where other blades quickly become dull.

Users found the blades easy to install and durable, so you’ll get years of excellent performance. Some people mentioned that these blades are also suitable for mulching fallen leaves. One person commented that these blades left their lawn looking as if it had been professionally groomed, without the high price tag!

Best Qualities

Cuts beautifully in all conditions.
Leaves a clean, well-groomed look to your yard.
Easy installation
Durable
Good for mulching leaves

Things you should know before buying

Some reviewers had problems with fit. Check the owner’s manual for your equipment to ensure that the original equipment manufacturer (O.E.M.) number of the replacement blade corresponds to one of the numbers listed for this item.
A few reviewers recommend sharpening before using, but others said it was razor-sharp out of the box. I suspect it depends on how sharp you like your blades.

Are you in the market for a top-quality mulching set? In that case, the Maxpower 561735XB Commercial Mulching Set should definitely be at the top of your list! With its superior cutting performance, easy installation, and durability, it’s hard to find a better value for your money. Give your lawn the love it deserves and buy it today.

Maxpower 561735B 3 Blade Set 48 in

If you’re looking for a high-quality blade set that will quickly work your lawn, you need the Maxpower 561735B 3 Blade Set. These blades are manufactured to meet or exceed all O.E.M. specifications, and they’re proudly made in the U.S.A. They are also much cheaper than the commercial blades!

Each blade in the set is made from tough, high-lift material that will withstand plenty of wear and tear. They can easily handle debris and dirt without throwing up a big cloud of dust behind.

Reviewers commented on a faster blade speed. Many commented that mowing was faster as they no longer needed to go over the same area multiple times. They also loved how these blades cut grass cleanly, even in harsh conditions.

Users also raved about the durability of these blades and how long they lasted.

Best Qualities

Good quality at a great price
Made in the U.S.A.
Get a clean, precise cut on your grass.
Mow over dirt and debris without churning up a cloud of dust.
Durable construction means these blades will last longer.

Things you should know before buying

Some reviewers had trouble with fit. Check manufacturer’s specifications carefully before purchasing.
Mounts with a 5-point star center hole

The Maxpower 561735B is an excellent choice for anyone looking for a reliable and durable set of mulching blades at a great price. So if you’re looking for a top-quality blade set that can handle anything your lawn throws at it, the Maxpower 561735B 3 Blade Set is perfect.

Best Mulching Blade For Ride On Mowers

Rotary Copperhead Mulching Mower Blades Fit John Deere Models

Looking to get the perfect, clean cut with your ride-on mower? Skip the hassle and go with Rotary Copperhead Mulching Mower Blades.

These premium-grade, high-carbon steel blades are tough enough to take on any terrain. One reviewer reported that their mower ran over and demolished an old brick without so much as a nick!

Rotary copperhead blades must pass rigorous quality checks that include Rockwell Hardness Standards, so you know you’re getting a top-quality product.

Plus, they’re made in the U.S.A. for a perfect fit on 42-inch decks. These blades need less power to do their job, meaning lower operating costs.

Precision sharpening means that they will give you a cleaner, finer cut. All the copperhead blades are austempered for optimal hardness. Perfectly balanced these blades produce noticeably less vibration for a smoother ride and better cut.

Best of all, the centrifugal airlift design and efficient discharge system provide fast and uniform distribution of clippings. Leaving you to mow without leaving unsightly clumps of grass all over your lawn.

Best Qualities

Tough, high-carbon steel blades can take on any terrain.
Centrifugal airlift design ensures even distribution of clippings.
Made in the U.S.A. for a perfect fit on 42″ decks.
Best Mulching Blade For Lawn Tractors
High-quality control standards
Requires less power to use, meaning lower operating costs

Things you should know before buying

If you are cutting taller grass, slow down the mower to allow the blade to do its job without strain.
A few reviewers recommend sharpening before using.

If you’re looking for a top-quality blade set that can handle anything your lawn throws at it, the Rotary Copperhead Mulching Mower Blades is a perfect choice. Order yours today and enjoy a clean, precise cut on your grass. Mulch your lawn without worry and get the perfect cut every time. So, don’t wait any longer; buy today!

Mulching Blades M170642

Looking for a top-quality mulching mower blade that won’t break the bank?

Keep your lawn looking its best with these high-quality mulching blades, designed for a precise fit on select John Deere riding mowers and zero-turn models. They’re a perfect match for 42″ cutting decks, but check for compatibility before purchase.

These blades are engineered for a snug, secure fit—just be sure your mower doesn’t use a star-pattern center hole. The grooved design finely chops clippings and returns them to the soil, making it ideal for those who want a clean cut and natural fertilization in one pass.

Made from premium steel, these blades are designed to withstand bending and damage. The 2-pack makes it easy to refresh your mower and keep it in peak condition. Looking for a dependable replacement that improves cutting efficiency and promotes a healthy lawn? These mulching blades are a great choice.

Best Qualities

Quality tested for safety and performance
Cuts grass evenly and cleanly.
Mulches and spreads the grass beautifully.

Things you should know before buying

This has a round center hole mounting system. Check yours before buying!
Some reviewers said they needed sharpening out of the box. This seems to be a common theme for all mulching blades.

If you’re looking for a top-quality blade set that can handle anything your lawn throws at it, the Arnold Mulching Blades M170642 is perfect.

Best Universal Mulching Blade

Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade

Looking for a better way to mulch your lawn? Look no further than the Maxpower 331981B Universal Gold Metal Mulching Blade.

This superior mulching blade is designed to fit 21-inch cut mowers and is made in the U.S.A. It meets or exceeds all O.E.M. specifications. The universal kit includes a cover washer and 6 reducing washers, so it will fit a range of mowers.

Maxpower 331981B features a greater cutting surface for increased mulching performance, sharpened cutting teeth for a precision cut, and a centrifugal air lift design for uniform chopping distribution.

Reviewers report that this blade quickly powers through tall or wet grass without clogs. They also commented that these blades do a better job of cutting and spreading clippings than their original factory blade.

Best Qualities

Greater cutting surface for increased mulching performance.
Sharpened cutting teeth give a precision cut.
Cuts through taller and wet grass with ease
Better at cutting and spreading the grass clippings than the factory blade

Things you should know before buying

Reviewers commented that this blade is very sharp, but it’s painted, so it’s not razor sharp. It helps to remove paint and sharpen the blade before installing.
When you remove your old blade, check the direction the blade’s cutting edge is facing and match the new blade.

If you are tired of your old mulching blade not performing up to par, it is time to upgrade to the Maxpower 331981B Universal Gold Metal Mulching Blade. This top-of-the-line mulching blade will make quick work of any size lawn and has a precision sharpened cutting edge for a clean cut every time. Order your Maxpower 331981B Universal Gold Metal Mulching Blade today!

Things To Consider When Buying Your Mulching Blade

Now that you know more about specific mulching blades, it’s time to choose the best one for your lawn. With a bit of research, you can find the perfect blade for your lawn care needs. Here are some factors to keep in mind when making your decision.

Deck Size

Deck size is probably the most crucial factor when buying your new mulching blade. It is absolutely essential to choose a blade that is suited to the size of your mower’s deck. Mowers are designed with a specific deck size in mind. Using an inappropriate length blade can lead to severe problems.

For example, If your blade is too small, you’ll make more passes due to the smaller cutting area. Plus, a smaller blade also creates less airflow, affecting the distribution of clippings. For multi-blade mowers, you might even miss cutting small strips of grass. This will leave you with a lawn that looks like it got a bad haircut.

If the blade is too large, it may not fit your deck and can slow down your mower significantly. The slower speed and lack of space can cause clumping. It may also be dangerous as it can strike the mower’s deck or another blade on each rotation.

The deck size is typically printed on the lawnmower body, so double-check before buying. If it’s not there, look in the owner’s handbook. It is usually listed with the replacement parts.

So be sure to know your deck size and get the right mulching blade for your mower. With the right-sized blade, you can keep your lawn looking great all season long.

Model and O.E.M. Numbers

When searching for a replacement mulching blade for your mower, it is essential to pay attention to the model number and the O.E.M. number.

The model number refers to the specific type of mower that you have. In contrast, the O.E.M. number is the particular number assigned to the replacement blade part.

You can usually find these numbers in the owner’s manual. By knowing and matching these numbers, you can ensure that you get an exact replacement part that will be perfectly compatible with your mower.

ProTip: Write both of these numbers on the front of your owner’s manual. That will save you from looking through all the pages to find them.

Number Of Blades

You need to get a kit with the correct number of blades for your mower. Most push mowers have one blade, but ride-on mowers can have multiple blades.

All the blades need to be replaced to get the best mulching performance from your mower. You need to replace all the blades at the same time. Replacing only one blade at a time can throw off the balance of your mower and cause uneven cutting. You can save money by buying a kit that contains all the necessary blades.

Fitment And Mounting Options

The fitment of their mower’s blade is just as important as the quality of the blade itself. There are a variety of mounting hole shapes on modern mowers, and each one is designed for a specific type of spindle. The last thing you want is to spend money on a great blade only to find out that it doesn’t fit on your spindle.

You can see which type you have by looking at the current blade or the owner’s manual. The four most common types are:

Five-point star
Six-point star
Universal
Bow tie

Universal blades are helpful as they fit a wide variety of mowers. However, they may not fit as securely as a blade designed just for your model. The most common complaint about universal blades is that they vibrate more than a properly fitting blade.

When it comes to fitment, it’s essential to choose a blade that will install easily and fit securely. Otherwise, you risk damaging your mower or having the blade come loose while in use.

Durability

The longevity of your mulching blades depends significantly on the material with which they’re built. You want to think about durability when you make your choice.

Look for a high-grade steel metal for your mower. Buyer reviews can be beneficial in determining what people have to say about the longevity of the blades.

Generally speaking, the higher the quality of the blade, the longer it will last. Choose a blade that will stand up to wear and tear and last through many use seasons. With that said, even the best blade will eventually need to be replaced. It’s just a good idea to think about how often you’ll need to do that when you purchase.

Finding this post helpful? See all our lawn care articles.

Mulching Blades F.A.Q.’s

What’s The Difference Between Mulching Blades And Regular Blades?

There are two primary differences between a mulching blade and a regular blade for lawnmowers. Mulching blades tend to be more curved than standard blades. They usually have cutting edges along a larger portion of their surface.

The other significant difference is the way they cut grass. Standard blades are designed to cut and then discharge or bag the clippings. Their shape creates a mighty lift that expels grass clippings from under the deck.

By contrast, mulching blades create a circulating air stream within the deck that moves the clippings back towards the blade after being cut. This makes finer clippings that break down quickly and are less likely to form thick layers of thatch or unsightly clumps.

Can You Use Regular Blades For Mulching?

Can you use regular blades for mulching? You can, but it is not recommended as the standard mowing blade is designed for cutting and not mulching. These blades are shaped to cut grass and eject them. The clippings produced by a standard mower are much courser. Many people find them unsightly while they can be left on the grass. You also run the risk that they will not break down fast enough and cause too much thatch. So, if you’re planning on mulching your lawn, invest in a good set of mulching blades. This will lead to more work in the long run as you will need to dethatch your lawn. Your lawn will thank you for it!

Can You Put Mulching Blades On An Ordinary Mower?

Yes, it is possible to use mulching blades with an ordinary mower. However, two key factors must be considered for a mulching blade to be effective on your current mower. Firstly, the mulching blade must be able to fit comfortably under the mower’s deck so that it can lift the clippings and cut them multiple times as it spins. Secondly, the mulching blades tend to be heavier than their standard counterparts. Some mowers are not powerful enough to turn them at the correct speed.

If your current mower does not have these capabilities, you may need to invest in a more specialized mulching mower. If your existing machine is up to the job, you can enjoy all of the benefits of a well-maintained lawn using mulching blades.

Will Mulching Blades Cut Grass?

Yes, mulching blades are explicitly designed to cut grass. The main difference between these blades and traditional blades is that they will cut the grass into many fine pieces. This helps to promote faster decomposition of the cut grass and provide nutrients back to the soil.

So if you’re looking to get the most out of your existing equipment, it’s definitely worth investing in a set of mulching blades for your favorite mower!

Why Should You Trust My Recommendations?

When I write one of these review posts, I do the kind of research I would do if I was buying the item. I have access to Consumer Reports, so I check to see what they say. I post questions on Facebook gardening groups and other forums to ask for recommendations. Finally, I look at the customer reviews to see what people have to say, both good and bad. Unfortunately, I do not have the financial resources to buy every item. Still, I am a gardener with 40 years of experience. I know what works and what doesn’t. This post represents about 5 hours of research.

We hope this post has helped guide you to the best mulching blade for your needs. Please share this post with friends and family who might also be in the market for a new mulching blade. As always, thanks for reading!