9 Best Lawn Mowers for St Augustine Grass in 2026

You’ll want a mower that’s powerful yet gentle on St Augustine grass, like the AMERISUN 21-Inch 3-in-1 gas mowers with adjustable heights and mulching options to promote healthy growth. These features help keep your lawn looking lush without stressing the grass.

For smaller yards, cordless models like the Greenworks 40V or the BLACK+DECKER 3-in-1 electric mowers offer quiet, eco-friendly convenience. They’re easy to maneuver and perfect if you want to avoid the hassle of gas.

Manual reel mowers also work if you prefer low maintenance and noise-free trimming. They’re great for those who want a simple, environmentally friendly way to keep St Augustine grass neat.

Explore these top picks and features to keep your lawn thriving efficiently. You’ll find the perfect mower to match your yard size and maintenance style.

Greenworks 40V 16″ Cordless Push Lawn Mower

The Greenworks 40V 16″ Cordless Push Lawn Mower offers a quiet and efficient way to maintain your lawn without the hassle of gas or oil. Its instant-start battery lets you begin mowing quickly, while the cordless design eliminates the noise and emissions of traditional mowers. This mower’s lightweight build makes it easy to push and maneuver around your yard.

Designed with a 16-inch cutting deck, it is ideal for small to medium lawns, including St Augustine grass. You can easily adjust the cutting height with a single lever, choosing from five different settings to achieve the perfect finish. The 2-in-1 mulching and rear bagging system provides versatility, letting you decide how to manage grass clippings.

Maintenance is straightforward since there’s no engine oil or gas to worry about. Its durable construction and battery-powered operation reduce upkeep and keep your lawn care routine simple. The compact size and weight make storage and transport convenient as well.

Best for: Homeowners with small to medium-sized lawns seeking a lightweight, eco-friendly mower that is easy to use and maintain.

What We Like:

• Lightweight design for effortless maneuvering.
• Quiet, instant-start cordless operation with zero emissions.
• Adjustable cutting height with five positions.
• 2-in-1 mulching and rear bagging capability.

Specification:

Feature	Details
Manufacturer	Greenworks
Cutting Deck Size	16 inches
Power Source	40V Lithium-ion battery
Weight	Approximately 35% lighter than steel deck mowers
Cutting Height	5 adjustable positions
Design	Cordless push mower

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

The BLACK+DECKER 3-in-1 Electric Lawn Mower Combo is designed to simplify lawn care for smaller spaces. Its multifunctional design combines mowing, trimming, and edging in one lightweight tool, making yard maintenance more efficient and less time-consuming. Switching between tasks is quick thanks to the detachable mower deck and rotating head, so you can maintain a clean, neat lawn with ease.

Powered by a 6.5 amp motor, this electric mower delivers consistent cutting power that handles thick grass and weeds effectively. The Automatic Feed Spool system reduces interruptions, allowing you to focus on the job. Weighing just 9.9 pounds, it is comfortable to maneuver and store, even in tight spaces.

Adjustable handle height and cutting positions provide customization to suit your comfort and lawn needs. While its 12-inch cutting width and 1.6-inch maximum cutting height are ideal for small yards, these limits may not meet the needs of larger or overgrown areas. The corded design ensures steady power but limits mobility compared to cordless models.

Maintenance is straightforward with easy access to parts for cleaning and adjustments. This compact, durable tool is a practical solution for homeowners wanting a single device to handle multiple lawn tasks without the bulk.

Best for: homeowners with small lawns or compact outdoor spaces seeking an all-in-one, lightweight electric tool for mowing, trimming, and edging.

What We Like:

• Versatile 3-in-1 design for mowing, trimming, and edging
• Lightweight at 9.9 pounds with adjustable handle and height settings
• Powerful 6.5 amp motor with Automatic Feed Spool for uninterrupted cutting
• Easy to maintain with detachable parts for quick cleaning and adjustments

Specification:

Feature	Details
Manufacturer	BLACK+DECKER
Weight	9.9 lb (4.5 kg)
Motor Power	6.5 amps
Cutting Width	12 inches (30.5 cm)
Max Cutting Height	1.6 inches (4 cm)
Power Source	Corded Electric
Handle	Adjustable Height

AMERISUN 21-Inch 3IN1 Gas Lawn Mower

Tackle your lawn care with ease using the AMERISUN 21-Inch 3IN1 Gas Lawn Mower. This mower is designed to make maintaining small to medium St Augustine grass lawns simple and efficient. Its powerful 144cc 4-stroke OHV engine delivers reliable cutting power, ensuring your grass is trimmed cleanly every time.

The 21-inch rust-resistant steel deck is built to handle tough patches without damage. With six cutting height adjustments from 1.5 to 3.9 inches, you can customize the mower to fit your grass length needs. Switching between mulching, bagging, or side discharge is quick and hassle-free, giving you control over how clippings are managed.

Weighing just 68 lbs and featuring a foldable handle, this mower is easy to maneuver and store, reducing physical strain and saving space. Regular maintenance is straightforward, keeping the mower running smoothly season after season. However, its size and cutting height range are best suited for smaller yards and may not suit very tall grass or extensive properties.

Best for: Homeowners with small to medium-sized St Augustine grass lawns seeking a lightweight, versatile gas mower that’s easy to handle and store.

What We Like:

• Powerful 144cc 4-stroke OHV engine for consistent cutting
• 3-in-1 functionality allows mulching, bagging, or side discharge
• Lightweight design with foldable handle for easy storage
• Rust-resistant steel deck ensures durability
• Six-position cutting height adjustment for lawn customization

Specification:

Feature	Details
Manufacturer	AMERISUN
Cutting Width	21 inches
Engine Size	144cc 4-stroke OHV
Weight	68 lbs
Deck Material	Rust-resistant steel
Cutting Height Range	1.5 to 3.9 inches
Functionality	Mulching, Bagging, Side discharge

Fiskars 17″ Manual Push Reel Mower

Experience a quieter, eco-friendly way to maintain your lawn with the Fiskars 17″ Manual Push Reel Mower. This mower operates without gas or batteries, eliminating fumes and noise for a more peaceful yard. Its 17-inch cutting width and adjustable height settings from 1.5 to 3.5 inches make it ideal for keeping St Augustine grass trimmed neatly under 6 inches tall.

Designed for easy use, the mower features the patented STAYSHARP Cutting System that keeps blades sharp longer, reducing maintenance time and costs. InertiaDrive technology enhances cutting power, allowing you to mow more efficiently with less effort. Its lightweight design ensures it’s simple to push across flat, dry lawns free from debris.

While perfect for well-maintained lawns, this mower is not suited for uneven terrain or thick, overgrown grass. Manual operation requires some physical effort, which might not be ideal for everyone. However, it offers a sustainable alternative to noisy, high-maintenance gas mowers.

Best for: Eco-conscious gardeners with flat, dry lawns looking for a quiet, low-maintenance mower for grass under 6 inches tall.

What We Like:

• Patented STAYSHARP Cutting System reduces blade sharpening needs.
• InertiaDrive technology doubles cutting power for efficient mowing.
• Quiet, fume-free operation lowers environmental impact.
• Lightweight and easy to maneuver on smooth lawns.

Specification:

Feature	Details
Manufacturer	Fiskars
Cutting Width	17 inches (43 cm)
Cutting Height	Adjustable 1.5–3.5 in (3.8–8.9 cm)
Weight	Lightweight
Operation	Manual push

AMERISUN 14-Inch Corded Electric Lawn Mower

Tackle your lawn chores with ease using the AMERISUN 14-Inch Corded Electric Lawn Mower. Its lightweight design makes it simple to maneuver, especially on small to medium-sized St Augustine lawns. Say goodbye to the noise and maintenance of gas mowers.

Powered by a robust 12.5 Amp motor, it delivers a steady cutting speed up to 3400 RPM. This ensures a clean cut without the need for engine tune-ups or fuel. The corded electric operation also means you’ll never run out of power mid-mow.

Adjust the 14-inch cutting deck to one of six heights, ranging from 1 to 3 inches. This flexibility helps you maintain your lawn exactly how you want it. Plus, it includes mulching capability and a sizable 10-gallon grass bag, making cleanup quick and eco-conscious.

Maintenance is minimal since there’s no gas engine or oil to worry about. The mower’s design focuses on ease of use and reliability for everyday lawn care. Just plug it in, adjust the height, and start mowing.

Best for: Homeowners with small to medium St Augustine lawns who want a lightweight, eco-friendly, and easy-to-use electric mower with versatile cutting options.

What We Like:

• Powerful 12.5 Amp motor with consistent cutting performance
• Six adjustable cutting heights for precise lawn customization
• Mulching feature and large 10-gallon grass collection bag
• Low-maintenance corded electric design

Specification:

Specification	Details
Manufacturer	AMERISUN
Cutting Width	14 inches
Motor Power	12.5 Amps
Cutting Height Range	1 to 3 inches (6 settings)
Grass Bag Capacity	10 gallons
Operation Type	Corded electric
Weight	Not specified

AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower

The AMERISUN 21-Inch 3IN1 Gas Push Lawn Mower offers a powerful solution for keeping small to medium lawns neat and well-maintained. Its 144cc 4-cycle OHV engine ensures steady performance, allowing you to mow efficiently without frequent stalls or restarts.

Designed for versatility, this mower provides three cutting options: mulching, bagging, and side discharge. This flexibility helps you manage grass clippings in the way that best suits your lawn’s needs, reducing waste and promoting a healthy yard.

Maintenance is straightforward thanks to the rust-resistant steel deck, which withstands wear and tear while staying easy to clean. The mower’s six adjustable cutting heights let you customize the grass length effortlessly, adapting to seasonal changes or personal preferences.

Maneuverability is enhanced by large wheels and a lightweight frame, making it easier to push around obstacles and corners. When not in use, the foldable handle simplifies storage in tight spaces. However, the grass catcher’s 1.4-bushel capacity may require frequent emptying on thick grass, and some might prefer a self-propelled model for less physical effort.

Best for: Homeowners with small to medium-sized lawns seeking a versatile, easy-to-use gas push mower with customizable cutting options.

What We Like:

• Reliable 144cc 4-cycle OHV engine with simple pull-start.
• Three-in-one cutting modes for adaptable lawn care.
• Rust-resistant 21-inch steel deck for durability.
• Six-height adjustments for precise grass cutting.
• Lightweight design with large wheels and foldable handle for easy handling and storage.

Specification:

Feature	Details
Manufacturer	AMERISUN
Cutting Width	21 inches (53 cm)
Engine	144cc 4-cycle OHV
Grass Catcher	1.4 bushels (approx. 50 L)
Cutting Heights	6 adjustable positions
Deck Material	Rust-resistant steel
Weight	Lightweight (exact weight not specified)
Handle	Foldable for storage

PowerSmart 21-Inch 3-in-1 Gas Lawn Mower

The PowerSmart 21-Inch 3-in-1 Gas Lawn Mower is designed to make lawn care easier and more efficient. Its powerful 170cc OHV engine delivers reliable starts and consistent performance, helping you tackle medium to large St Augustine grass lawns without hassle.

This mower’s 21-inch steel deck covers wide paths, reducing mowing time. You can easily adjust the cutting height between 1.5 and 3.9 inches to suit your lawn’s needs. The 3-in-1 feature lets you choose to bag, mulch, or rear discharge clippings, promoting a healthier lawn or faster cleanup.

Rear-wheel drive combined with large 10-inch wheels improves traction on slopes and uneven surfaces, giving you better control. Although it weighs about 36 pounds, the mower balances stability with maneuverability for comfortable use.

Maintenance is straightforward, and the mower’s durable build supports long-term use. Its design focuses on versatility, performance, and ease, making it a practical choice for maintaining lush St Augustine grass.

Best for: Homeowners with medium to large St Augustine grass lawns seeking a versatile and dependable gas lawn mower with multiple cutting options.

What We Like:

• Robust 170cc OHV engine ensures smooth starts and lasting power.
• Adjustable cutting heights and 3-in-1 functionality enhance mowing flexibility.
• Rear-wheel drive with large wheels offers excellent traction on inclines.

Specification:

Feature	Details
Manufacturer	PowerSmart
Cutting Deck Size	21 inches
Engine Size	170cc OHV
Cutting Height Range	1.5 to 3.9 inches
Wheel Size	10 inches (rear)
Weight	Approximately 36 pounds

AMERISUN 21” Gas Push Lawn Mower, 144cc Engine

Experience effortless lawn care with the AMERISUN 21” Gas Push Lawn Mower, designed to handle medium to large St Augustine lawns with ease. Its powerful 144cc engine ensures steady performance, helping you maintain a neat and healthy yard without frequent stalls or slowdowns.

The 21-inch steel deck offers multiple cutting options, including mulching, side discharge, and rear bagging, making it easy to customize your mowing based on your lawn’s needs. Adjust the cutting height between 1.5 and 3.9 inches for precise grass trimming, keeping your lawn looking sharp and well-groomed.

Built for stability, the mower’s tall wheels provide excellent traction on slopes and uneven ground. The foldable handle enhances storage convenience, allowing you to keep your mower compact when not in use. While it requires manual pushing, this mower’s lightweight yet sturdy construction balances effort and durability.

Maintenance is straightforward with durable materials like steel and alloy components. This design ensures long-lasting use, although it may feel heavier than some electric alternatives. The AMERISUN mower is a practical choice for those seeking a reliable, no-frills gas mower for consistent lawn care.

Best for: Homeowners with medium to large St Augustine lawns needing a durable and versatile gas push mower for efficient yard maintenance.

What We Like:

• Powerful 144cc engine for reliable, consistent mowing
• Versatile steel deck with mulching, side discharge, and rear bagging
• Six adjustable cutting heights for tailored grass care
• Tall wheels provide superior traction on uneven terrain
• Foldable handle design for easy storage

Specification:

Feature	Details
Manufacturer	AMERISUN
Cutting Width	21 inches (53.3 cm)
Engine Size	144cc
Cutting Heights	1.5 – 3.9 inches (3.8 – 9.9 cm)
Wheel Size	High wheels (exact size not specified)
Weight	Not specified (steel and alloy construction)
Handle	Foldable

AMERISUN 21″ Gas Push Lawn Mower, 144cc

Experience effortless lawn care with the AMERISUN 21″ Gas Push Lawn Mower, designed to tackle medium to large St Augustine grass lawns with confidence. Its 144cc 4-stroke OHV engine delivers consistent power, ensuring smooth starts and efficient cutting every time. This mower simplifies yard maintenance, making your lawn look neat without extra hassle.

The mower offers a 21-inch cutting width and six adjustable height settings from 1.5 to 3.9 inches, allowing you to customize the cut to your lawn’s needs. Whether you prefer mulching, side discharge, or bag collection, this mower adapts easily to your preferred method, reducing cleanup time.

Built with a durable steel deck and a high-wheel design featuring 10-inch rear and 7-inch front wheels, it glides smoothly over uneven surfaces. The foldable handle enhances storage convenience, saving space when not in use. Regular maintenance is straightforward, helping keep the mower in top condition season after season.

Best for: Homeowners seeking a reliable gas push mower that handles medium to large St Augustine grass lawns with versatile cutting options.

What We Like:

• Powerful 144cc 4-stroke OHV engine for reliable performance
• Six adjustable cutting heights with 3-in-1 mowing options
• High-wheel design for easy maneuvering on uneven terrain
• Foldable handle for compact storage
• Durable steel deck construction

Specification:

Feature	Details
Manufacturer	AMERISUN
Engine	144cc 4-stroke OHV
Cutting Width	21 inches
Cutting Height	6 settings (1.5–3.9 in)
Wheels	Rear 10 inches, Front 7 inches
Deck Material	Steel
Handle	Foldable

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

When choosing a lawn mower for St Augustine grass, you’ll want to focus on cutting height options to protect your lawn’s health.

Consider the blade type and sharpness, plus whether the mower runs on gas, electric, or battery power.

Maneuverability, weight, and features like mulching or bagging will also make a big difference in your mowing experience.

Cutting Height Options

Because St Augustine grass thrives at a cutting height between 3 and 4 inches, you’ll want a lawn mower that offers adjustable height settings. This lets you set the mower around the ideal 3.5 inches, promoting healthy growth and preventing scalping.

Look for mowers with at least 3 to 6 height adjustment positions, so you can easily adapt to seasonal changes and varying lawn conditions. Precise height control not only keeps your grass dense but also helps reduce weed invasion by maintaining optimal turf health.

Choosing a mower with versatile cutting height options ensures you can manage different growth stages effectively, keeping your St Augustine lawn lush and well-maintained year-round.

Blade Type and Sharpness

Although many lawn mowers come with different blade types, rotary blades are your best bet for cutting St Augustine grass cleanly and promoting healthy growth. These blades provide a smooth cut that prevents tearing, which is crucial since damaged grass blades can turn brown and unhealthy.

Keeping your blades sharp is essential—you should sharpen or replace them regularly to maintain optimal cutting performance. Dull blades cause uneven cuts and stress the grass, making it more vulnerable to pests and disease.

When choosing a mower, pay attention to the blade material and design; alloy steel blades tend to stay sharp longer and offer better durability. By prioritizing sharp rotary blades, you’ll ensure your St Augustine lawn stays lush, healthy, and visually appealing.

Mower Power Source

Choosing the right mower power source can make a big difference in how easily you maintain your St Augustine grass. If you want quiet, low-maintenance mowing, electric mowers powered by rechargeable batteries or cords are ideal.

Corded models provide consistent power but require an outlet nearby, while battery-powered mowers offer portability with run times typically between 30 minutes to an hour. On the other hand, gas-powered mowers deliver higher power, which is great for thicker or taller St Augustine grass.

Both gas and electric mowers come in self-propelled versions, reducing your effort, especially on uneven terrain common in St Augustine lawns. So, think about your yard size, power needs, and convenience when choosing a mower power source to keep your grass healthy and your mowing routine hassle-free.

Maneuverability and Weight

When you mow St Augustine grass, a lawn mower’s maneuverability and weight play crucial roles in your comfort and efficiency. Lighter mowers are easier to handle, especially on uneven ground or around obstacles common in St Augustine lawns.

Look for models with ergonomic handles and balanced weight distribution to reduce fatigue during long mowing sessions. While heavier mowers offer more stability and often deliver a cleaner cut, they require more effort to push and turn.

Larger wheels enhance maneuverability by rolling smoothly over rough or hilly terrain. If you have a small or intricately landscaped yard, a compact, lightweight mower gives you better control and makes storage simpler.

Choosing the right balance between weight and maneuverability ensures a smoother, less tiring mowing experience. It really makes a difference when you’re out there mowing for a while!

Mulching and Bagging Features

A mower with effective mulching and bagging features can make a big difference in caring for your St Augustine grass. Mulching mowers finely chop clippings, returning vital nutrients to the soil and enhancing soil quality and moisture retention. This promotes a healthier, more vibrant lawn.

On the other hand, bagging features let you easily collect and remove clippings, cutting down on cleanup time. If you want versatility, consider a 3-in-1 mower that offers both mulching and bagging options, so you can adapt to your lawn’s needs.

Also, look for efficient bagging capacity to avoid frequent emptying, making your yard work smoother and quicker. Choosing the right mulching and bagging features helps keep your St Augustine grass thriving with less effort.

Deck Size and Width

Along with mulching and bagging capabilities, the deck size and width play a big role in how effectively you can mow your St Augustine grass. A deck width of at least 21 inches is ideal because it reduces the number of passes needed, making mowing faster and less tiring.

Larger decks provide even cutting and better coverage, which is essential for thick, dense St Augustine lawns. If you choose a deck smaller than 20 inches, expect to spend more time and effort on larger yards.

Wider decks especially benefit those with expansive lawns, helping you save time and avoid fatigue. While considering size, ensure the deck’s material and design resist corrosion, crucial for the humid environments where St Augustine grass thrives.

Maintenance and Durability

Since St Augustine grass thrives best under consistent care, you’ll want a mower built for durability and easy maintenance. Look for a mower with a cutting deck that resists rust and corrosion to ensure long-lasting performance.

Regularly sharpen the blades and clean the deck to prevent tearing the grass and to get a clean cut every time. High-quality steel blades hold their edge longer, so you won’t need to replace them as often.

Adjustable height settings are essential—they help reduce stress on your lawn and keep the grass healthy. Don’t forget proper storage and routine inspections to prolong your mower’s lifespan.

Frequently Asked Questions

How Often Should I Mow St Augustine Grass During Peak Growing Season?

You should mow St. Augustine grass about once a week during peak growing season. This keeps it healthy and dense without stressing the grass.

Just keep an eye on how fast it’s growing and adjust your mowing frequency accordingly. Also, try not to cut more than one-third of the blade at a time.

What Is the Ideal Mowing Height for St Augustine Grass?

You should keep St. Augustine grass at about 3 to 4 inches tall. Studies show cutting it shorter can stress the grass, reducing its drought tolerance by up to 30%.

Can I Use a Mulching Mower for St Augustine Grass?

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

Just make sure to mow when the grass is dry to avoid clumping and uneven mulch. That way, your lawn looks neat and stays healthy!

How Do I Maintain My Lawn Mower Blade for St Augustine Grass?

You should sharpen your lawn mower blade every 20-25 hours of use to keep St. Augustine grass healthy. Dull blades tear grass, causing up to 30% more stress.

Are Electric Mowers Better Than Gas for St Augustine Lawns?

Electric mowers are better if you want quieter operation and less maintenance. They’re easier on your ears and don’t require as much upkeep.

But gas mowers give you more power, which can be helpful for thick St Augustine grass. So, if your lawn is dense, gas might handle it better.

You’ll choose based on your lawn size and noise preference. It really depends on what matters most to you.

Conclusion

Choosing the right lawn mower for your St. Augustine grass doesn’t have to be overwhelming. With options like cordless, gas, and manual mowers, you can find the perfect fit for your yard and lifestyle.

Don’t you want a mower that makes your lawn care easier and keeps your grass healthy? Consider your needs, budget, and preferences, and you’ll be mowing like a pro in no time!

When selecting the best lawn mower for St. Augustine grass, think about the size of your lawn and how much maintenance you’re comfortable with. Cordless mowers offer convenience and less noise, while gas mowers provide more power for larger yards. Manual mowers are eco-friendly and great for smaller spaces.

Ultimately, choosing the right mower ensures your St. Augustine grass stays lush and well-maintained. So, take your time, weigh your options, and enjoy a beautiful, healthy lawn all year round!