8 Best Lawn Mowers for St Augustine Grass in 2026

If you want the best lawn mower for your St. Augustine grass in 2026, you’ve got some great options to consider. Lightweight cordless models like the MZK 20V offer easy handling, perfect if you’re looking for convenience and maneuverability.

On the other hand, durable gas-powered options such as the 21” Self-Propelled mower are excellent for thick, dense lawns that need a bit more power.

Eco-friendly reel mowers are a fantastic choice for smaller yards and help reduce maintenance time. Plus, adjustable cutting heights are key to keeping your St. Augustine grass healthy and thriving.

Look for versatile features like mulching capabilities and large collection bags, which make lawn care much simpler. Take a look at these top picks to find the perfect fit for your yard’s size and specific needs. Your lawn will thank you!

MZK 20V 13″ Brushless Cordless Lawn Mower LM13B4

The MZK 20V 13″ Brushless Cordless Lawn Mower LM13B4 is designed to make lawn care simple and efficient for small to medium yards. Its lightweight frame, weighing just 13 pounds, allows for easy handling and maneuverability, reducing fatigue during use.

Powered by a brushless motor spinning up to 3400 RPM, this mower delivers smooth and consistent cutting performance. The 13-inch cutting deck offers four height adjustments, letting you tailor the grass length from 1.3 to 2.6 inches for a neat finish.

This model runs on two 20V lithium-ion batteries, providing up to 30 minutes of cordless mowing. The batteries are easily swappable, helping you extend runtime if needed. Its 8-gallon grass bag simplifies cleanup by collecting clippings efficiently.

Maintenance is straightforward thanks to the durable plastic construction and brushless motor, which requires less upkeep than traditional motors. However, the relatively narrow deck means more passes on larger lawns, and plastic parts may not match the longevity of metal alternatives.

Best for: Those with small to medium-sized lawns seeking a lightweight, cordless mower that balances ease of use with effective cutting and cleanup.

What We Like:

• Lightweight design enhances maneuverability and reduces user strain.
• Brushless motor offers efficient, reliable cutting performance.
• Dual 20V batteries enable cordless operation with quick battery swaps.
• Adjustable cutting height for customizable lawn care.
• Large grass bag simplifies post-mowing cleanup.

Specification:

Feature	Details
Manufacturer	MZK
Cutting Deck Size	13 inches
Weight	13 lb
Motor Type	Brushless
Battery Voltage	Dual 20V lithium-ion
Grass Bag Capacity	8 gallons
Cutting Height Range	1.3 – 2.6 inches

Earthwise 1715-16EW 16-Inch 7-Blade Push Reel Lawn Mower, Grey

Experience a quieter, more eco-friendly way to maintain your lawn with the Earthwise 1715-16EW push reel mower. This mower tackles your grass without disturbing the peace and keeps your yard looking sharp. Its 7-blade alloy steel reel is designed to stay sharp, ensuring precise, even cuts every time.

Adjust the cutting height effortlessly from 0.5 to 2.5 inches to match your lawn’s needs. With a 16-inch cutting width, this mower makes neat work of small to medium-sized lawns, while the 10 composite wheels provide smooth, stable maneuvering across different terrains. Its manual push design means no emissions, making it an excellent choice for environmentally conscious homeowners.

Ideal for various grass types like St. Augustine, Bermuda, and Zoysia, the Earthwise 1715-16EW supports healthy turf by avoiding scalping or damage. Maintenance is simple since the blades require less frequent sharpening compared to traditional mowers. However, this mower may need more effort on larger lawns and is best suited for grass already trimmed to manageable heights.

Best for: homeowners seeking an eco-friendly, quiet push reel mower that delivers precise trimming for multiple grass types.

What We Like:

• Sharp 7-blade reel for clean, even cuts with adjustable height.
• Zero emissions promote sustainable lawn care.
• Smooth operation with 10 composite wheels.
• Suitable for a variety of common lawn grasses.
• Low maintenance with durable alloy steel blades.

Specification:

Feature	Details
Manufacturer	Earthwise
Cutting Width	16 inches (40.6 cm)
Cutting Height	0.5 to 2.5 inches (1.3–6.4 cm)
Number of Blades	7 (alloy steel)
Wheels	10 composite wheels
Color	Grey

21” Self-Propelled 4-in-1 Gas Lawn Mower

Tackling thick St Augustine grass and uneven terrain becomes easier with the 21” Self-Propelled 4-in-1 Gas Lawn Mower. Its strong 170cc engine powers through dense patches while the self-propelled drive reduces effort on slopes. Switch to push mode for more precise control in tight spots.

This mower offers versatile lawn care with its 4-in-1 cutting system. You can mulch, bag, side-discharge, or rear-discharge clippings based on your garden’s needs. The large 65L grass bag means fewer interruptions for emptying, helping you finish faster.

Adjust the cutting height across seven settings to get the perfect trim every time. Built with durable steel blades and high-quality wheels, it maneuvers smoothly over uneven ground. When the job’s done, the foldable handle makes storage simple, saving valuable garage space.

Maintenance involves regular fueling and upkeep typical of gas engines, which ensures dependable performance. Though it’s heavier than push mowers, the self-propelled feature offsets this by easing the mowing process.

Best for: Homeowners managing thick, uneven lawns with St Augustine grass who want a versatile and easy-to-use gas mower.

What We Like:

• Powerful 170cc engine with self-propelled drive for less effort on slopes
• Large 65L grass bag reduces emptying frequency
• 4-in-1 cutting system adapts to different lawn care needs
• Foldable handle for compact, space-saving storage
• Durable steel blade and quality wheels for smooth maneuvering

Specification:

Feature	Details
Manufacturer	Not specified
Cutting Width	21 inches (53 cm)
Engine	170cc Gas Engine
Grass Bag Capacity	65 Liters
Cutting Height	7 adjustable positions
Drive Type	Self-propelled / Push
Handle	Foldable
Blade Material	Steel

Fiskars 17″ Manual Reel Push Mower

Experience a quieter, eco-friendly way to keep your St Augustine grass neat with the Fiskars 17″ Manual Reel Push Mower. This mower is designed to reduce your maintenance chores by eliminating the need for frequent blade sharpening. Its patented STAYSHARP CUTTING SYSTEM keeps blades sharp longer, cutting down on friction and wear.

The InertiaDrive Reel design doubles the cutting power of standard reel mowers, making it easier to push through thick, healthy grass. Its adjustable cutting height from 1.5 to 3.5 inches lets you tailor the cut to your lawn’s needs, while the reversible chute directs clippings away from your feet for a cleaner mowing experience.

Ideal for flat, dry lawns under 6 inches tall, this mower offers a practical solution for homeowners seeking a low-maintenance, powerful, and environmentally friendly tool. Its manual operation means no fuel or electricity, but it may be more physically demanding for larger or uneven yards.

Best for: homeowners with flat, dry lawns who want an efficient, low-maintenance reel mower that provides strong cutting power without frequent blade upkeep.

What We Like:

• Patented cutting system reduces blade wear and eliminates annual sharpening
• InertiaDrive Reel design delivers double the cutting power for easier pushing
• Adjustable cutting height and reversible chute enhance convenience and control
• Quiet, cordless operation supports eco-friendly lawn care

Specification:

Feature	Details
Manufacturer	Fiskars
Cutting Width	17 inches (43 cm)
Cutting Height Range	1.5 to 3.5 inches (3.8 to 8.9 cm)
Suitable Lawn Type	Flat, dry, under 6 inches tall
Operation	Manual reel push

Litheli 14″ Cordless Lawn Mower with Battery

Experience effortless lawn care with the Litheli 14″ Cordless Lawn Mower with Battery, designed to make mowing manageable and comfortable. Its compact 14-inch cutting width and powerful brushless motor handle up to 3,000 square feet of St Augustine grass with ease. This mower reduces noise and vibration, letting you maintain your lawn quietly and efficiently.

The mower’s five adjustable cutting heights from 1 to 2.5 inches offer precise control over your grass length. Its lightweight design and adjustable handle promote a comfortable posture, reducing strain during use. Quick-fold storage simplifies keeping your space tidy when the job is done.

Powered by a 5000mAh lithium-ion battery, the mower runs for about 30 minutes per charge. It even doubles as a power source for your devices, adding extra convenience. While the battery suits medium lawns well, larger areas may need multiple charges. The motor and cutting width are ideal for regular grass but may struggle with very tall or dense growth.

Maintenance is straightforward with included extra blades and a large collection bag to capture clippings efficiently. This mower balances practicality, ease, and performance for everyday lawn care.

Best for: Seniors, women, and anyone seeking a lightweight, cordless mower for medium-sized lawns up to 3,000 sq. ft.

What We Like:

• Ergonomic design with adjustable handle for comfortable use
• Quiet, efficient brushless motor with five height settings
• Rechargeable 5000mAh battery with 30-minute runtime and device charging
• Compact 14-inch cutting width ideal for small to medium lawns
• Comes with extra blades and a large grass collection bag

Specification:

Feature	Details
Manufacturer	Litheli
Cutting Width	14 inches
Motor Type	Brushless
Battery Capacity	5000mAh Lithium-ion
Runtime	Approximately 30 mins
Cutting Heights	5 settings (1-2.5 in)
Weight	Lightweight (exact weight not specified)
Color Options	Not specified

17″ Cordless 40V Electric Lawn Mower with Battery

Experience hassle-free lawn care with the 17″ Cordless 40V Electric Lawn Mower with Battery, designed to simplify mowing while delivering precise results. Its cordless design eliminates the frustration of tangled cords, providing you with unrestricted movement across your yard.

Weighing just 14 kg, this lightweight mower is easy to push and store. The dual 20V lithium batteries combine to offer up to 40 minutes of runtime, giving you ample power to tackle lawns up to 500 m² without interruption.

Adjust your cutting height between 25 and 75 mm to suit different grass types and preferences. The 17-inch cutting deck offers a perfect balance between coverage and maneuverability, making it ideal for various lawn sizes.

Maintenance is straightforward with a brushless 3000 RPM motor that resists jams and reduces wear. The 50L grass collection bag and mulching mode minimize the need for frequent stops, keeping your mowing sessions efficient.

Best for: homeowners with small to medium-sized lawns up to 500 m² seeking a lightweight, cordless mower with adjustable cutting heights and effective grass collection.

What We Like:

• Lightweight and portable for easy handling
• Smooth, jam-resistant brushless motor
• Long runtime with dual 20V lithium batteries
• Adjustable cutting heights for versatility
• Large grass bag plus mulching option reduces emptying frequency

Specification:

Feature	Details
Manufacturer	Not specified
Cutting Width	17 inches
Weight	14 kg
Battery	Two 20V 4.0Ah lithium
Runtime	Up to 40 minutes
Cutting Height	25 to 75 mm (six settings)
Grass Bag Capacity	50 liters

AMERISUN 21″ Gas Lawn Mower 144cc 4-Stroke

The AMERISUN 21″ Gas Lawn Mower 144cc 4-Stroke is designed to make lawn care easier and more efficient for homeowners. Its powerful 144cc 4-cycle OHV engine delivers smooth cutting power that quickly handles thick grass. This reduces the time and effort you spend mowing your lawn.

The durable 21-inch steel deck offers a balance of strength and cutting width, letting you cover more ground with each pass. You have the flexibility to mulch, bag, or side-discharge grass clippings, which helps keep your yard neat and reduces cleanup time. The large 1.4-bushel catcher collects clippings efficiently.

Maintenance is straightforward with this gas-powered mower, but regular engine care and rust prevention on the steel deck will extend its lifespan. Weighing just 68 lbs, it’s easy to maneuver and store, thanks to foldable handles that save space.

This mower is ideal for small to medium-sized yards where reliable, versatile, and precise cutting is needed without the hassle of heavier equipment.

Best for: Homeowners with small to medium-sized yards looking for a powerful and versatile gas lawn mower that simplifies lawn maintenance.

What We Like:

• Strong 144cc 4-cycle OHV engine for smooth, efficient cutting
• Multiple mowing options: mulching, rear bagging, and side discharge
• Large 1.4-bushel grass catcher reduces cleanup time
• Lightweight design (68 lbs) with foldable handles for easy storage

Specification:

Feature	Details
Manufacturer	AMERISUN
Cutting Width	21 inches (53.3 cm)
Engine Size	144cc 4-stroke OHV
Weight	68 lbs (30.8 kg)
Deck Material	Steel

BLACK+DECKER 3-in-1 Electric Lawn Mower Combo

Tackling lawn care on small properties just got easier with the BLACK+DECKER 3-in-1 Electric Lawn Mower Combo. This versatile tool lets you switch effortlessly between mowing, trimming, and edging, helping you maintain a tidy yard without the hassle of multiple devices. Its 6.5 amp motor with POWERDRIVE Transmission cuts through thick St Augustine grass and stubborn weeds, ensuring a clean finish every time.

Designed for ease of use, the lightweight mower features adjustable handles and a cord retention system, reducing fatigue during extended use. The Automatic Feed Spool keeps the string trimmer running smoothly, so you can focus on your lawn instead of frequent adjustments. This combo tool simplifies maintenance by consolidating three essential lawn care functions into one compact unit.

Ideal for small lawns, the corded electric operation provides consistent power but limits your range compared to battery models. While its cutting width and height adjustments suit typical yard needs, they may not cover all terrain variations. Overall, this multi-functional lawn mower combo offers practical solutions for neat and efficient lawn upkeep.

Best for: Homeowners with small lawns seeking a versatile, easy-to-use tool for mowing, trimming, and edging.

What We Like:

• Combines mower, trimmer, and edger to reduce equipment clutter.
• Powerful motor with transmission designed for tough grass and weeds.
• Lightweight design with adjustable handles for user comfort.
• Automatic Feed Spool ensures uninterrupted trimming.
• Cord retention system enhances safety and control.

Specification:

Feature	Details
Manufacturer	BLACK+DECKER
Motor Power	6.5 amps
Functions	Mowing, Trimming, Edging
Transmission	POWERDRIVE Transmission
Weight	Lightweight (exact weight not provided)
Power Source	Corded electric
Handle	Adjustable

Factors to Consider When Choosing a Lawn Mower for St Augustine Grass

When choosing a lawn mower for your St Augustine grass, you’ll want to focus on cutting height adjustability to protect the blades. Sharp, suitable blades and the right power source will make mowing easier and more effective.

Also, consider how maneuverable and lightweight the mower is, along with how well it collects clippings to keep your lawn tidy. These factors can really make a difference in your mowing experience.

Cutting Height Adjustability

Because St. Augustine grass thrives best when cut between 3 to 4 inches, having a mower with cutting height adjustability is crucial. You want a mower that lets you easily set the blade height within this range to promote healthy growth and prevent scalping.

Look for models offering multiple height positions, ideally from 2.5 to 4 inches, so you can adapt to seasonal changes or varying lawn conditions. Clear, user-friendly adjustment mechanisms save you time and hassle, helping you maintain the perfect cutting height consistently.

Blade Type and Sharpness

Although choosing the right mower is important, the blade type and sharpness play an even bigger role in maintaining healthy St. Augustine grass.

A reel mower with a sharp, alloy steel blade delivers a clean, precise cut that’s ideal for this grass type. Sharp blades slice through the grass smoothly, reducing tearing and stress while promoting robust growth.

If your lawn is thick or dense, a high-quality blade will make mowing easier and more efficient.

Dull blades, on the other hand, cause ragged edges that increase the risk of disease and leave your lawn looking uneven.

To keep your mower performing at its best, sharpen the blades regularly and perform maintenance checks.

This ensures consistent cutting and helps your St. Augustine grass stay healthy and vibrant.

Power Source Options

Choosing the right power source for your lawn mower plays a crucial role in maintaining healthy St. Augustine grass. If you have a smaller lawn and want to minimize noise and emissions, an electric mower is a great choice.

Cordless battery-powered models offer portability, but watch your battery life, especially on thick grass. Plug-in electric mowers provide consistent power but limit your mobility due to the cord.

For larger or tougher lawns, gas-powered mowers deliver superior cutting power and longer runtime. Though they’re noisier and less eco-friendly, they get the job done well.

Consider your lawn size, terrain, local noise restrictions, and environmental impact when selecting the power source. Matching these factors to your mower’s power option ensures efficient, effective care for your St. Augustine grass.

Maneuverability and Weight

When you’re tackling thick St. Augustine grass, maneuverability and weight become crucial factors. Choosing a lighter mower, ideally under 20 pounds, helps you easily navigate around obstacles and tight spots.

Look for models with ergonomic handles and adjustable height settings to reduce fatigue and boost control. Compact mowers with a cutting width of 16 inches or less allow precise movement in dense or uneven areas.

Self-propelled options can significantly lighten your workload, especially on thick or tall grass. Don’t overlook wheel size and traction—larger, textured wheels offer better grip and smoother motion across varying lawn surfaces.

Prioritizing these features ensures your mowing experience is efficient, comfortable, and tailored to the unique demands of St. Augustine lawns. It really makes a difference when you’re out there working.

Grass Collection Efficiency

Maneuvering your mower effectively is just one part of managing St. Augustine grass. Because it grows thick and dense, you need a mower with a high-capacity collection system to prevent clumping and keep debris removal efficient.

Look for models with large bags or bins—50 liters or more—to cut down on emptying time during your mowing. Adjustable cutting height is key, too; it helps maintain the ideal blade position for clean cuts and better clipping capture.

Mowers with mulching features give you flexibility—fine-cut clippings can nourish your lawn or be collected easily. Also, consider mowers designed with strong airflow and suction inside the deck. This is especially useful when grass is wet or dense, ensuring consistent collection without clogging or loss of clippings.

Deck Size and Coverage

Although deck size might seem like a minor detail, it directly impacts how efficiently you can mow your St. Augustine grass. A larger deck, around 21 inches, lets you cover extensive areas faster, cutting down your overall mowing time.

If your lawn is medium to large, a cutting width between 16 and 21 inches strikes a good balance between coverage and maneuverability. For tighter spaces, smaller decks like 13 inches work better but need more passes.

Adjustable deck heights, ranging from 1.5 to 3.9 inches, give you precise control to maintain your grass’s optimal health. Remember, an even and well-built deck ensures a clean, uniform cut, which is key to keeping your St. Augustine lawn looking lush and vibrant.

Durability and Build Quality

Since St. Augustine grass requires regular mowing, you need a durable lawn mower built to last. Look for a sturdy deck made from reinforced steel or heavy-duty plastic to endure frequent use.

The mower should have corrosion-resistant parts, especially if you live in humid or coastal areas, to prevent rust and extend its life. Pay attention to robust wheels and axles that can handle uneven terrain without wearing out quickly.

The frame and handle must be firmly assembled with secure joints and premium hardware to ensure stability while you mow. Choosing a mower manufactured with tight tolerances and strict quality control guarantees reliable performance.

That way, you won’t have to worry about repairs or replacements anytime soon. Durability and build quality truly matter for maintaining your St. Augustine lawn efficiently.

Noise and Environmental Impact

When choosing a lawn mower for your St. Augustine grass, consider noise and environmental impact. Electric mowers run much quieter, producing around 60-70 decibels, while gas models often reach 85 decibels or more. This noise difference helps keep your neighborhood peaceful and protects local wildlife from disturbance.

Plus, battery-powered mowers emit no direct emissions, unlike gas engines that release pollutants like carbon monoxide and hydrocarbons. Using an electric mower reduces your carbon footprint and limits harmful greenhouse gases.

If you want a sustainable, neighbor-friendly yard care routine, opting for a quiet, electric mower makes a significant difference. It’s a smart choice that benefits both the environment and your community without sacrificing lawn care quality.

Frequently Asked Questions

How Often Should I Fertilize St Augustine Grass for Best Mower Results?

You should fertilize St. Augustine grass every 6 to 8 weeks during the growing season, typically spring through early fall.

This keeps your lawn healthy and dense, helping your mower achieve a clean, even cut.

Regular feeding really makes a difference in how your grass grows and looks. So, sticking to that schedule is a smart move!

What Is the Ideal Mowing Height for St Augustine Grass?

You’ll want to set your mower between 2.5 to 4 inches—this height keeps St. Augustine grass healthy and lush.

Cutting too short stresses the grass, so resist the urge to scalp it for a vibrant lawn. Trust me, giving it some extra length really helps it thrive.

Can I Use a Mulching Mower With St Augustine Grass?

Yes, you can use a mulching mower with St. Augustine grass. It helps return nutrients to the soil, promoting healthy growth.

Just make sure to mow regularly and avoid cutting more than one-third of the blade at once. This way, your lawn stays healthy and looks great!

How Do Weather Conditions Affect Mowing St Augustine Grass?

You should avoid mowing when St. Augustine grass is wet or during extreme heat since it stresses the grass.

Early morning or late afternoon mowing works best, letting your lawn recover quickly and stay healthy.

Are Electric Mowers Better Than Gas for St Augustine Lawns?

Imagine swapping your gas guzzler for a sleek electric car—electric mowers are quieter, eco-friendly, and require less maintenance.

For St. Augustine grass, you’ll appreciate their precision and ease, making your lawn care smoother and greener.

Conclusion

Choosing the right lawn mower for your St. Augustine grass can make all the difference in achieving that perfect, lush lawn. Whether you prefer cordless convenience, gas-powered power, or eco-friendly reels, there’s a mower on this list tailored just for you.

So, why settle for a patchy yard when you can easily keep your grass healthy and neat? With the right mower, your lawn will be the envy of the neighborhood all year round.

Remember, the best lawn mowers for St Augustine grass not only cut efficiently but also protect the delicate blades from damage. Investing in a mower designed specifically for this type of grass ensures a cleaner cut and healthier growth. So grab one from our list and enjoy a vibrant, well-manicured lawn all season long!