13 Best Mowers for St Augustine Grass in 2027 (Top Picks)
You’ll want a mower with adjustable cutting heights around 2.5 to 4 inches to keep your St Augustine grass healthy. This range helps maintain the lush, dense turf St Augustine is known for, preventing scalping and promoting strong growth.
Gas-powered self-propelled mowers with 21–22-inch decks deliver power and durability, especially for dense turf and uneven terrain.
For smaller lawns, cordless electric mowers offer quiet, eco-friendly operation with decent runtime. They’re easy to maneuver and perfect if you prefer a cleaner, greener mowing experience.
Look for versatile 3-in-1 cutting systems — mulching, bagging, and side discharge — so you can tackle different lawn care tasks with one tool.
Easy-to-use controls make mowing less of a chore, and keeping the blades sharp with regular maintenance ensures a clean cut every time.
Ready to find the perfect mower model for your lawn’s unique needs? Let’s dive into the top picks!
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21″ Self-Propelled Gas Lawn Mower with 3-in-1 Cutting
- Reliable Customer Support: We are committed to providing dependable support throughout your ownership. If you have any questions about setup, operation, or replacement parts, our customer service team is always available to provide assistance
- Powerful 170cc 4-Cycle OHV Engine: Equipped with a reliable 170cc 4-stroke OHV engine, this gas lawn mower provides consistent power for handling thick grass, overgrown areas, and regular lawn maintenance. Designed for dependable startups and smooth operation, it helps you efficiently maintain medium-sized yards
- 3-in-1 Versatile Cutting System: Easily adjust to different lawn conditions with three cutting options: rear bagging, mulching, and side discharge. The 1.9-bushel grass collector helps collect clippings efficiently, while the mulching function returns nutrients to the soil and side discharge is ideal for taller or denser grass
- 21-Inch Cutting Width & Durable Steel Deck: Featuring a 21-inch cutting width and a durable stamped steel deck, this mower covers more ground with each pass, helping reduce mowing time. The optimized blade system provides consistent cutting performance for a clean and even lawn appearance
- 7-Position Cutting Height Adjustment: Adjust the mowing height with the convenient single-lever system featuring 7 cutting positions from 1 to 3 inches. Easily choose the suitable grass height for different seasons, lawn conditions, and mowing preferences
Tackling thick, tough grass just got easier with the 21″ Self-Propelled Gas Lawn Mower featuring 3-in-1 cutting capabilities. This mower is designed to handle dense St Augustine grass smoothly, so you spend less time pushing and more time enjoying your yard. Its self-propelled system reduces fatigue, helping you navigate medium-sized lawns with ease.
The 170cc 4-stroke OHV engine delivers reliable power to cut through overgrown patches without struggle. You can switch between bagging, mulching, or side discharge modes, adapting to your lawn’s specific needs. Adjusting the cutting height is simple with a single lever, offering seven settings from 1 to 3 inches for precise lawn care.
While the gas engine requires routine maintenance, like fuel and oil changes, it ensures consistent performance and longer runtime compared to battery-powered options. The mower may be heavier than electric models, but its durable build supports effective mowing on various terrains. Assembly is needed, which might take some time if you’re new to lawn equipment setup.
Best for: Homeowners with medium-sized yards seeking a versatile mower that handles thick, overgrown grass efficiently.
What We Like:
- Reliable 170cc 4-stroke OHV engine powers through dense grass.
- Flexible 3-in-1 cutting system adapts to different lawn conditions.
- Easy single-lever height adjustment with seven settings.
- Self-propelled design reduces user fatigue during mowing.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Not specified |
| Cutting Width | 21 inches |
| Engine Type | 170cc 4-stroke OHV gas engine |
| Cutting Height Range | 1 to 3 inches (7 settings) |
| Drive Type | Self-propelled |
| Weight | Not specified |
| Color Options | Not specified |
MZK 40V 16-Inch Cordless Brushless Lawn Mower
- MZK 40V 15.5-Inch 3-in-1 Cordless Lawn Mower, Brushless Motor
Experience effortless lawn care with the MZK 40V 16-Inch Cordless Brushless Lawn Mower. Designed to tackle small to medium St Augustine lawns, this mower reduces interruptions with its dual-battery system, letting you work longer without frequent recharges. Its brushless motor offers reliable power, maintaining a steady 3400 RPM for a clean, even cut every time.
The 16-inch cutting deck provides five height settings from 1.4 to 3 inches, allowing you to adjust your lawn’s appearance seasonally. Whether you prefer mulching or bagging, the 40L grass bag makes disposal simple and efficient. This mower’s quick assembly and two-step safety start add convenience while ensuring safe operation.
Maintenance is straightforward thanks to the brushless motor’s durability, which means less wear and fewer service needs. However, the smaller cutting deck may require extra passes on larger lawns, and runtime can vary with thick grass or uneven terrain. Users new to cordless brushless mowers might also need some time to get accustomed to its operation.
Best for: Homeowners with small to medium-sized St Augustine lawns seeking a cordless mower that combines extended runtime with versatile cutting options.
What We Like:
- Dual 40V batteries enable longer mowing sessions with easy swaps
- Efficient brushless motor delivers consistent power and less maintenance
- Adjustable cutting heights and mulching/bagging options adapt to different lawn needs
Specification:
| Feature | Details |
|---|---|
| Manufacturer | MZK |
| Cutting Width | 16 inches (40.6 cm) |
| Battery Voltage | 40V (dual batteries) |
| Cutting Heights | 5 settings (1.4–3 in) |
| Grass Bag Capacity | 40L |
| Motor Type | Brushless |
Greenworks 40V 16 in Push Lawn Mower, 4.0 Ah Battery and Charger
- [16" LAWN MOWER] - This 40V lawn mower cuts up to 1/3 acre with fully charged 4.0Ah battery (varies based on grass condition and operator technique)
- [ULTRA LIGHTWEIGHT] - 35% lighter than steel deck mowers
- [SINGLE LEVER HEIGHT ADJUST] - 5 position height adjustment
- [2-IN-1 SYSTEM] - Mulch and rear bagging
- Greenworks 40V 16" (Push) Lawn Mower, 4.0Ah Battery
The Greenworks 40V 16 in Push Lawn Mower offers a smart solution for gardeners managing small to medium St Augustine lawns. Its lightweight design makes maneuvering effortless, reducing fatigue during mowing sessions. The 16-inch cutting deck is tailored to suit modest yard sizes efficiently without overwhelming the user.
Adjusting the cutting height is simple with a single lever that offers five different positions. This lets you customize your lawn’s appearance with ease. The mower includes a two-in-one mulching and rear bagging system, giving you flexible options for grass disposal and lawn care.
Powered by a 4.0 Ah battery, this mower runs quietly and starts instantly without the hassle of gas or oil. It supports mowing up to one-third of an acre per charge, which fits most small to medium lawn needs. Maintenance is minimal, with no emissions or engine upkeep required.
While ideal for many users, the push mower design and battery life might limit its appeal for larger properties or those seeking a self-propelled mower for easier handling.
Best for: Gardeners with small to medium-sized lawns seeking a lightweight, eco-friendly, and easy-to-use push lawn mower.
What We Like:
- Ultra-lightweight design for easy handling.
- Two-in-one mulching and rear bagging system.
- Quiet operation with instant starts and no engine maintenance.
- Adjustable cutting height with a simple lever.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Greenworks |
| Cutting Deck Size | 16 inches |
| Battery Voltage | 40V |
| Battery Capacity | 4.0 Ah |
| Maximum Mowing Area | Up to 1/3 acre |
| Weight | Approximately 35% less than steel deck mowers |
| Operation Type | Push mower |
YARDMAX 22″ 201cc Gas Self-Propelled Mower (YG2860)
- Exclusive and industry-leading CVT (Continuously variable transmission) offers superior speed variability to adjust the mower pace to your walking speed by simply selecting the 6-speed shift lever
- Exclusive rubber tires with aggressive spiked tread pattern significantly increase overall traction and maneuverability
- Starting made easier with the automatic choke system, no need to prime or choke the engine
- Quickly clean the underside of the cutting deck with the deck cleanout port
- Single-lever deck adjustment for quickly setting your mow height
The YARDMAX 22″ 201cc Gas Self-Propelled Mower (YG2860) offers homeowners an easy way to achieve a perfectly manicured lawn. Its industry-leading CVT transmission and 6-speed shift lever give you precise control over your mowing speed. This means you can effortlessly match the mower’s pace to your walking speed, reducing strain and improving efficiency.
Designed with aggressive rubber tires, it provides excellent traction and maneuverability on St Augustine grass and similar lawn types. The powerful 201cc engine features an automatic choke, ensuring quick, hassle-free starts every time you need to mow.
Maintenance is straightforward thanks to the deck cleanout port and a single-lever height adjustment system, simplifying both cleaning and cutting height changes. The 22-inch cutting deck balances efficient cutting with easy handling, making it suitable for medium to small-sized yards.
This mower also offers 3-in-1 functionality—mulching, bagging, and side discharge—adding versatility for different lawn care needs. Its sleek black finish combines style with performance, making it a reliable and attractive addition to your garden tools.
Best for: Homeowners seeking a self-propelled mower with precise speed control and excellent traction for medium-sized lawns featuring St Augustine grass.
What We Like:
- Precise speed control via CVT transmission and 6-speed lever
- Aggressive tires enhance traction and maneuverability
- Easy start with 201cc engine and automatic choke
- Convenient deck cleanout port and single-lever height adjustment
- 3-in-1 mowing options for versatile lawn care
Specification:
| Feature | Details |
|---|---|
| Manufacturer | YARDMAX |
| Cutting Deck Size | 22 inches |
| Engine Size | 201cc |
| Transmission Type | CVT with 6-speed lever |
| Tire Type | Aggressive rubber |
| Color | Black |
| Weight | Not specified |
AMERISUN 21″ Self-Propelled Gas Lawn Mower
- 170CC 4-CYCLE ENGINE WITH AUTO CHOKE: Delivering steady performance, the 170cc OHV 4-stroke engine powers this gas lawn mower with ease. Auto choke ignition simplifies starting, while its air-cooling system ensures lasting operation. Ideal for users who prioritize a durable lawn mower gas powered option
- SELF-PROPELLED LAWN MOWER: The self-propelled drive reduce effort, save time, deliver precise cuts, and adapt effortlessly to any terrain—providing unmatched comfort and efficiency, especially for first-time users.
- 3-IN-1 LAWN MOWER: Choose between mulching, side discharge, or bagging to keep your yard clean and efficient. With a 1.4-bushel capacity, the rear grass catcher makes this gas lawn mower both versatile and lawn-friendly
- 6-POSITION ADJUSTABLE CUTTING HEIGHT (1.5”-3.9”) – Customize your cut with this 21-inch gas lawn mower by quickly switching between 6 height settings, ensuring a clean and professional finish for every season.
- DURABLE STEEL DECK WITH GRASS CATCHER & FOLDABLE HANDLE: Built to last with a heavy-duty steel deck and 1.4-bushel grass catcher, this self-propelled gas mower reduces trips to empty and folds for compact storage. Easy assembly gets you mowing in minutes.
Tackle your lawn care with confidence using the AMERISUN 21″ Self-Propelled Gas Lawn Mower. Designed to handle tough St Augustine grass, this mower delivers consistent power through its 170cc 4-cycle OHV engine with auto choke ignition. The self-propelled feature reduces physical strain, letting you glide smoothly over uneven terrain.
Its 21-inch cutting deck offers six height settings to suit your lawn’s needs, along with 3-in-1 functionality—mulching, side discharge, and bagging. This versatility helps you maintain a cleaner, healthier lawn with less effort. The heavy-duty steel deck ensures durability, while the foldable handle makes storage straightforward.
Maintenance involves regular engine checks and fuel handling, common for gas-powered mowers. While heavier than electric models, its robust build provides long-lasting performance. Assembly is required before first use, so plan ahead to get started.
Best for: homeowners seeking a powerful, easy-to-use gas mower that efficiently manages St Augustine grass and adapts well to varied landscapes.
What We Like:
- Reliable 170cc 4-cycle OHV engine with auto choke for steady starts
- Self-propelled drive eases maneuvering on slopes and rough ground
- Six cutting heights with 3-in-1 deck options for versatile lawn care
- Durable steel deck and foldable handle for longevity and compact storage
Specification:
| Feature | Details |
|---|---|
| Manufacturer | AMERISUN |
| Cutting Deck Size | 21 inches |
| Engine | 170cc 4-cycle OHV |
| Drive Type | Self-propelled |
| Height Adjustments | 6 levels |
| Functions | Mulching, side discharge, bagging |
| Deck Material | Steel |
| Handle | Foldable |
PowerSmart EasyGlide 21-Inch Gas Lawn Mower
- Reliable Engine: Experience high performance and longer working life with the 144cc 4-stroke OHV engine, engineered with a stabilized body structure for maximum durability.
- Easy Start System: Equipped with auto choke for easy start, and primer structure for better starting.
- 21“ Steel Deck: Featuring a 21" durable steel deck built to last through tough yard tasks, the specialized blade delivers finely mulched clippings and a clean, even cut every time.
- Effortless Maneuvering: Designed with 10" rear / 7" front double ball-bearing wheels for smooth control and easier pushing around your yard.
- 3-in-1 Mowing Function: Mulching, bagging, or side discharge. This versatile system lets you nourish your lawn with fine mulch, simplify cleanup with bagging, or power through tall grass with side discharge.
Experience effortless lawn care with the PowerSmart EasyGlide 21-Inch Gas Lawn Mower, designed to make cutting your grass smooth and efficient. Its robust 144cc 4-stroke OHV engine delivers consistent power, helping you tackle medium to large lawns with ease. Starting the mower is simple thanks to the auto choke and primer system, eliminating the usual hassle.
The mower’s 21-inch steel deck offers a clean, even cut and finely mulches clippings, ideal for maintaining St Augustine grass. You can switch between mulching, bagging, and side discharge, giving you control over how you manage your lawn’s clippings. The adjustable single-lever height control lets you customize the cutting height precisely.
Maneuvering around your yard is comfortable with smooth-rolling double ball-bearing wheels designed for stability and ease. While this gas mower requires regular maintenance like oil changes, its sturdy build ensures long-lasting performance. Keep in mind, it’s manually pushed, so some users might find it heavier than electric alternatives.
Best for: Homeowners wanting a durable and easy-to-start gas lawn mower with versatile cutting options and smooth handling for medium to large yard upkeep.
What We Like:
- Reliable 144cc 4-stroke OHV engine with effortless start system
- 3-in-1 mowing functions for versatile lawn care
- Adjustable cutting height via single-lever control
- Smooth maneuverability with durable double ball-bearing wheels
- Sturdy 21-inch steel deck for even, clean cuts
Specification:
| Attribute | Details |
|---|---|
| Manufacturer | PowerSmart |
| Deck Size | 21 inches (53 cm) |
| Engine | 144cc 4-stroke OHV |
| Starting System | Auto choke and primer |
| Cutting Height | Adjustable, single-lever |
| Wheels | Double ball-bearing |
| Weight | Not specified |
PowerSmart 22-Inch 170cc Self-Propelled Lawn Mower
- 170CC OHV ENGINE – Powerful 170cc 4-stroke OHV engine delivers reliable performance for thick grass and larger yards. Auto choke and recoil start make starting easy.
- SELF-PROPELLED REAR-WHEEL DRIVE – Rear-wheel drive provides better traction on slopes and uneven terrain, reducing pushing effort.
- 22-INCH STEEL CUTTING DECK – Wide 22-inch cutting path helps finish mowing faster, while the durable steel deck and heavy-duty blade are built to last season after season.
- 3-IN-1 CUTTING OPTIONS – Choose mulching, rear bagging or rear discharge. The large 60L grass bag holds more clippings and reduces emptying.
- 6-POSITION HEIGHT ADJUSTMENT – Easily adjust cutting height from 1.5" to 3.9" for different mowing needs.
Tackling thick St Augustine grass on large yards is simpler with the PowerSmart 22-Inch 170cc Self-Propelled Lawn Mower. Its robust 170cc engine powers through dense patches while the self-propelled rear-wheel drive eases your workload on hills and uneven ground. You’ll notice how smoothly it moves, making mowing less tiring.
The 22-inch steel deck covers broad areas quickly, saving you time. Its heavy-duty blade is designed for durability, ensuring consistent cutting performance. Adjust the cutting height easily with six settings ranging from 1.5 to 3.9 inches to get the perfect lawn finish every time.
This mower features a versatile 3-in-1 system that lets you mulch, bag, or discharge grass clippings based on your preference. The large 60L grass bag collects more clippings so you can mow longer without interruption. Regular maintenance, such as cleaning and protecting the steel deck from rust, will keep it running well.
Best for: Homeowners with larger yards and thick grass who need a powerful, easy-to-maneuver lawn mower with versatile cutting options.
What We Like:
- Powerful 170cc engine and self-propelled rear-wheel drive for smooth traction on slopes
- Durable 22-inch steel deck with heavy-duty blade for efficient mowing
- Flexible 3-in-1 cutting system with large 60L grass bag reduces stops
- Six adjustable height settings for customized lawn care
Specification:
| Feature | Details |
|---|---|
| Manufacturer | PowerSmart |
| Cutting Deck Width | 22 inches (55.9 cm) |
| Engine Size | 170cc |
| Drive Type | Self-propelled, rear-wheel |
| Cutting Height Range | 1.5 to 3.9 inches (3.8–9.9 cm) |
| Grass Bag Capacity | 60L |
| Material | Steel deck |
PowerSmart 21″ Gas Self-Propelled Lawn Mower
- ⚡ STARTS IN 1–2 PULLS, RUNS ALL SEASON: The 170cc OHV engine fires up fast and powers through thick, overgrown grass without bogging down. Consistent performance from first cut to last — no priming drama, no surprises.
- ⛰️ SELF-PROPELLED FOR HILLS & UNEVEN GROUND: Rear-wheel drive + 10" large wheels grip slopes and rough terrain so you guide, not push. Customers call it "very easy to handle" even through full-yard sessions.
- ♻️ 3-IN-1: BAG, MULCH, OR DISCHARGE — NO TOOLS NEEDED: Switch modes instantly to match any lawn condition — collect clippings clean, return nutrients via mulching, or rear-discharge through high grass fast. All attachments included, ready to use out of the box.
- 🌿 21" ALLOY STEEL DECK — CUTS AS FAST AS YOU PUSH: Full-width steel deck handles thick turf in a single clean pass; 6 height positions (1.5"–3.9") adjust with one lever in seconds. Note: replacement blades for this model are 20" — order accordingly.
- 🔧 FOLDS FLAT IN SECONDS — BUILT FOR MORE THAN ONE SEASON: Handle folds for vertical storage, saving up to 70% of garage floor space. Reinforced at all high-stress points so it holds up well beyond the first few mows — backed by PowerSmart customer support.
Tackling thick, overgrown St Augustine grass can be challenging, but the PowerSmart 21″ Gas Self-Propelled Lawn Mower makes this task much easier. Its 170cc OHV engine delivers reliable power that starts quickly with just a couple of pulls. This ensures you can get to work fast without frustration.
The mower’s 21-inch alloy steel deck cuts efficiently and offers a versatile 3-in-1 system. You can choose between mulching, bagging, or rear discharge, adapting easily to your lawn care needs. Its self-propelled design with rear-wheel drive and large wheels provides smooth handling on slopes and uneven terrain.
Adjusting the cutting height is simple with a single lever controlling six settings. This flexibility lets you maintain your lawn precisely. When finished, the foldable handle reduces storage space by up to 70%, making it convenient for small garages or sheds.
Maintenance is straightforward, though note that replacement blades are designed for a 20-inch deck, which may require attention to compatibility. The mower does not feature electric start or enhanced noise reduction but offers solid performance for its class.
Best for: Homeowners and gardeners needing a dependable, easy-to-maneuver mower for thick, uneven grass and compact storage.
What We Like:
- Powerful 170cc OHV engine starts easily and powers through dense grass
- Versatile 3-in-1 cutting options for mulching, bagging, or rear discharge
- Rear-wheel drive and large wheels improve control on slopes
- Six cutting height adjustments for precise lawn care
- Foldable handle saves significant storage space
Specification:
| Feature | Details |
|---|---|
| Manufacturer | PowerSmart |
| Cutting Deck Size | 21 inches |
| Engine | 170cc OHV Gas |
| Drive Type | Self-propelled, rear-wheel |
| Cutting Height | 6 settings (single lever) |
| Handle | Foldable |
| Replacement Blade | 20-inch compatible |
AMERISUN 21″ Gas Push Lawn Mower, 2-in-1
- POWERFUL 144CC GAS ENGINE: The Amerisun 21-inch gas lawn mower is powered by a 144cc 4-stroke OHV engine, delivering reliable cutting performance for routine home lawn care. A practical gas push mower and walk-behind lawn mower for residential yards.
- WIDE 21-INCH CUTTING DECK: The 21-inch cutting width helps cover more grass in fewer passes, making this 21 inch lawn mower a smart yard grass cutter for small to medium lawns, weekly mowing, and general lawn maintenance.
- 2-IN-1 MULCHING & SIDE DISCHARGE: This 2-in-1 push lawn mower supports mulching and side discharge with the included side discharge chute, ideal for shoppers looking for a mulching lawn mower, side discharge mower, or gas mower for yard cleanup.
- 6-POSITION HEIGHT ADJUSTMENT: Choose from 6-position height adjustment with a cutting range from 1.5 to 3.9 inches, giving this adjustable cutting height mower the flexibility to handle different grass lengths and seasonal lawn conditions.
- EASY PUSH CONTROL & LARGE WHEELS: Push drive with 7-inch front and 10-inch rear wheels helps improve maneuverability around the yard, while the engine start/stop control supports simple operation for this gas push lawn mower.
The AMERISUN 21″ Gas Push Lawn Mower is designed to make lawn care straightforward and efficient. Its 144cc 4-stroke OHV engine provides reliable power to tackle small to medium St Augustine grass lawns with ease. The 21-inch cutting deck covers ample ground, helping you finish mowing faster.
This mower features a 2-in-1 mulching and side discharge system, allowing you to choose how to handle grass clippings based on your lawn’s needs. Adjusting the cutting height is simple with six settings, ranging from 1.5 to 3.9 inches, so you can maintain your grass at the perfect length.
Large wheels and ergonomic controls improve maneuverability, making it easier to push and steer across your yard. While it requires physical effort since it’s a push mower, its straightforward design means fewer mechanical issues and easier maintenance.
Best for: Homeowners with small to medium-sized St Augustine grass lawns seeking a reliable and user-friendly gas push mower with versatile cutting options.
What We Like:
- Consistent cutting power from a 144cc 4-stroke OHV engine
- Flexible 2-in-1 mulching and side discharge functions
- Six adjustable cutting heights for precision
- Large wheels and ergonomic controls for smooth maneuvering
Specification:
| Feature | Details |
|---|---|
| Manufacturer | AMERISUN |
| Cutting Deck Width | 21 inches |
| Engine | 144cc 4-stroke OHV |
| Cutting Height | 1.5 to 3.9 inches (6 positions) |
| Drive Type | Push |
| Weight | Not specified |
AMERISUN 21″ Gas Lawn Mower with Mulching
- Efficient Yard Care: With a 21-inch cutting width and robust construction, this gas lawn mower is ideal for small to medium-sized yards, delivering a clean and even cut effortlessly.
- Strong and Dependable Engine: Powered by a 144cc engine, this mower offers extended engine life, reduced vibration, and easy upkeep. Its pull-start system ensures quick and reliable ignition every time.
- Flexible 2-in-1 Cutting System: The 2-in-1 steel deck provides both mulching and side discharge options, adapting to various lawn care needs. The ergonomic handle design enhances comfort during operation.
- Customizable Cutting Height: Featuring a 6-position dual-lever height adjustment (1.5-inch to 3.9-inch), this mower allows for precise cutting. The 7-inch front and 10-inch rear wheels ensure smooth navigation on uneven terrain.
- Safety Features: Includes essential safety features such as a start/stop control lever, safety shields, and clear safety instructions to prevent accidents and injuries.
Tackle your lawn care with confidence using the AMERISUN 21″ Gas Lawn Mower with Mulching. Designed to make mowing easier and more efficient, this mower handles small to medium-sized St Augustine lawns with ease. Its powerful 144cc engine delivers steady performance, ensuring a clean and even cut every time.
The mower features a versatile 2-in-1 steel deck that lets you switch from mulching to side discharge quickly. This flexibility helps you maintain a healthy lawn by recycling clippings or removing excess grass. With six adjustable cutting heights, you can customize your mowing to suit your lawn’s needs, from 1.5 to 3.9 inches.
Ergonomically designed, the mower includes a comfortable handle and large wheels that provide smooth maneuverability over uneven ground. Foldable handles make storage straightforward, saving space in your garage or shed. Maintenance is simple thanks to the durable steel deck and reliable engine design.
While the 21-inch cutting width is ideal for smaller yards, it may not suit larger properties. The pull-start ignition requires some effort, and the height adjustment range might not fit very short or very tall grass preferences.
Best for: Homeowners with small to medium-sized St Augustine lawns seeking a versatile and easy-to-use gas lawn mower with mulching capabilities.
What We Like:
- Reliable 144cc engine offers consistent power.
- 2-in-1 steel deck enables quick mulching or side discharge.
- Comfortable handling with ergonomic grip and large wheels.
- Foldable handles provide easy storage.
- Adjustable cutting height adapts to different lawn conditions.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | AMERISUN |
| Cutting Width | 21 inches |
| Engine Size | 144cc |
| Height Adjustment | 1.5 to 3.9 inches (6 positions) |
| Deck Material | Steel |
| Starting System | Manual pull-start |
| Handle Type | Ergonomic, foldable |
| Suitable Lawn Size | Small to medium yards |
BLACK+DECKER 3-in-1 Electric Lawn Mower Combo
- Multi-Function Convenience: Easily switch between mowing, trimming, and edging for three-in-one versatility with your string trimmer
- Powerful Cutting Performance: The 6.5 amp motor with POWERDRIVE Transmission delivers top results when tackling tough weeds and thick grass using your electric weed eater
- Continuous Operation: Automatic Feed Spool (AFS) system allows uninterrupted work without bumping or manual adjustments, keeping your grass cutter efficient
- Ideal for Small Lawns: Designed for compact spaces with a 12-inch cutting width, 1.6-inch cutting height, and speeds up to 8000 RPM, this grass trimmer is built for precision
- Comfort and Control: Lightweight construction with adjustable handle and height positions ensures maximum comfort during use
The BLACK+DECKER 3-in-1 Electric Lawn Mower Combo is designed to simplify lawn care. It combines mowing, trimming, and edging into one compact tool, making yard work less time-consuming and more efficient. This versatility lets you switch tasks quickly without changing equipment.
Equipped with a powerful 6.5 amp motor and POWERDRIVE Transmission, it handles thick St Augustine grass and stubborn weeds with ease. The 12-inch cutting width and adjustable height up to 1.6 inches provide precise control for a neat finish.
Maintenance is straightforward thanks to the Automatic Feed Spool, which feeds line automatically to keep you working without interruptions. The lightweight design and adjustable handle reduce fatigue, allowing comfortable use over small to medium lawns.
This tool works best in compact spaces where access to power outlets is convenient. Its corded design may limit mobility on larger properties, and the cutting width means more passes for big areas. Still, its ability to convert into a wheeled edger adds extra value and functionality.
Best for: Small lawn owners needing a versatile, easy-to-use electric tool for mowing, trimming, and edging in tight spaces.
What We Like:
- 3-in-1 functionality for mowing, trimming, and edging
- Powerful 6.5 amp motor with POWERDRIVE for tough grass and weeds
- Lightweight design with adjustable handle for user comfort
- Automatic Feed Spool ensures continuous operation
- Converts easily into a wheeled edger for edge precision
Specification:
| Feature | Details |
|---|---|
| Manufacturer | BLACK+DECKER |
| Cutting Width | 12 inches (30.5 cm) |
| Motor Power | 6.5 amps |
| Adjustable Cutting Height | Up to 1.6 inches (4 cm) |
| Design | Corded, 3-in-1 combo |
| Weight | Lightweight (exact weight not specified) |
AMERISUN 21″ Gas Lawn Mower with 3-in-1 System
- POWERFUL 144CC 4-STROKE OHV ENGINE – Equipped with a reliable 144cc 4-cycle OHV engine, this gas powered lawn mower delivers strong cutting performance and smooth operation for small to medium-sized yards. The easy pull-start system provides quick ignition for hassle-free lawn care and seasonal yard maintenance.
- 21-INCH STEEL DECK FOR FASTER MOWING – Featuring a durable 21-inch steel cutting deck, this walk behind lawn mower covers more ground with each pass to reduce mowing time. The heavy-duty rust-resistant deck is built to handle thick grass, routine lawn maintenance, and residential landscaping tasks.
- 3-IN-1 MULCH, REAR BAG & SIDE DISCHARGE – Designed for versatile lawn care, this gas push mower supports mulching, rear bagging, and side discharge modes. The included large 1.4-bushel grass catcher helps collect clippings efficiently, reducing cleanup time and improving mowing convenience.
- 6-POSITION HEIGHT ADJUSTMENT FOR PRECISION CUTTING – Easily customize cutting height from 1.5" to 3.9" with the convenient 6-level adjustment system. Ideal for different grass types, seasonal lawn conditions, and achieving a clean, even cut across overgrown or maintained lawns.
- LIGHTWEIGHT PUSH MOWER WITH EASY MANEUVERABILITY – Weighing only 68 lbs, this lightweight gas lawn mower is easy to push and maneuver around trees, flower beds, and yard obstacles. Features durable 7-inch front wheels, 10-inch rear wheels, and a foldable handle for compact garage or shed storage.
Experience easier lawn care with the AMERISUN 21″ Gas Lawn Mower, designed to tackle small to medium St Augustine lawns efficiently. Its powerful 144cc engine delivers consistent cutting power, helping you maintain a neat yard without struggling through thick grass patches.
This mower features a versatile 3-in-1 cutting system, allowing seamless switching between mulching, rear bagging, and side discharge. You can adapt your mowing style to your lawn’s condition, reducing cleanup time and improving yard health.
Adjust your cutting height easily with six positions from 1.5 to 3.9 inches to suit seasonal growth changes. The 21-inch steel deck handles dense grass well, offering a smooth, even cut every time.
Weighing just 68 lbs, it’s lightweight and easy to maneuver. Large wheels and a foldable handle make storage compact and transportation simple. Routine maintenance is straightforward, though remember this gas-powered mower requires regular fueling and upkeep.
Best for: Homeowners with small to medium St Augustine lawns seeking a powerful and adaptable gas lawn mower for effective seasonal maintenance.
What We Like:
- Strong 144cc engine for reliable cutting performance
- Flexible 3-in-1 system for mulching, bagging, or side discharge
- Lightweight design with foldable handle enhances maneuverability and storage
Specification:
| Feature | Details |
|---|---|
| Manufacturer | AMERISUN |
| Cutting Deck Size | 21 inches |
| Engine Size | 144cc |
| Weight | 68 lbs |
| Cutting Heights | 1.5 – 3.9 inches (6 positions) |
| Grass Catcher Capacity | 1.4 bushels |
MZK 40V 17-Inch Cordless Brushless Lawn Mower
- MZK 30V Lawn Mower with 15'' Cutting Deck and Foldable Handle, Quiet Electric Mower with Charger
Experience effortless lawn care with the MZK 40V 17-Inch Cordless Brushless Lawn Mower. Designed to deliver efficient mowing without the hassle of cords, this mower’s brushless motor offers smooth operation and two-speed settings to handle varying grass thickness with ease. Its compact 17-inch deck and five adjustable cutting heights let you customize the cut to suit your St Augustine grass perfectly.
The cordless design means no more tripping over cords or searching for power outlets. Powered by a 40V battery, it provides 25 to 35 minutes of runtime—ideal for small to medium-sized yards. The large 40L grass bag minimizes interruptions, letting you mow longer before emptying. Plus, its lightweight and foldable frame ensures easy maneuverability and storage in tight spaces.
Maintenance is straightforward thanks to the brushless motor, which requires less upkeep and runs cooler than brushed alternatives. While the cutting width may extend mowing time on larger lawns, this mower excels in delivering portability and user-friendly performance. Keep in mind, the battery and charger might be sold separately depending on your purchase.
Best for: Homeowners with small to medium-sized yards who want a lightweight, cordless mower with adjustable cutting heights and efficient grass collection.
What We Like:
- Brushless motor with two-speed settings for consistent, clog-free cutting
- Lightweight and foldable design for easy handling and compact storage
- Large 40L grass collection bag reduces the frequency of stops
Specification:
| Feature | Details |
|---|---|
| Manufacturer | MZK |
| Cutting Width | 17 inches |
| Battery Voltage | 40V |
| Cutting Height | 1.18 to 3.35 inches (5 levels) |
| Grass Bag Capacity | 40 liters |
| Runtime | 25–35 minutes |
| Weight | Lightweight (exact weight not specified) |
Factors to Consider When Choosing a Mower for St Augustine Grass
When choosing a mower for St Augustine grass, you’ll want to focus on cutting height options to avoid scalp damage. Pay attention to blade type and sharpness for a clean cut.
Also, consider the power source to balance efficiency and convenience. It makes a difference depending on your lawn size and preferences.
Maneuverability and weight matter too. Plus, think about how the mower manages grass clippings—it can make your lawn care so much easier.
Cutting Height Options
Because St. Augustine grass thrives best when cut between 2.5 to 4 inches, choosing a mower with versatile cutting height options is crucial. You’ll want a mower that offers multiple height adjustments, ideally ranging from at least 1.5 to 4 inches, so you can tailor the cutting height to seasonal changes and turf conditions.
This flexibility helps you avoid scalping your lawn, which can damage the grass and reduce its density. Look for models with easy-to-use single-lever height controls; they make switching heights quick and hassle-free.
Blade Type and Sharpness
Although many factors influence lawn health, blade type and sharpness play a critical role in maintaining your St. Augustine grass. Using a mower with a sharp, high-quality blade ensures every cut is clean, preventing jagged edges that can stress the grass and invite disease.
Dull blades tear the grass, leading to a ragged appearance and slower recovery. You should regularly inspect and sharpen your mower’s blades to keep them in optimal condition.
Choosing blades designed for St. Augustine grass can also enhance cutting efficiency, promoting healthier growth. By prioritizing blade sharpness and quality, you’ll help your lawn stay vibrant and lush.
This makes your mowing sessions more effective and your grass more resilient. Don’t underestimate this simple yet vital aspect when selecting your mower.
Power Source and Efficiency
Choosing the right power source can make a big difference in how efficiently you mow your St. Augustine grass. Gas-powered mowers deliver consistent power and longer runtimes, ideal for tackling thick, dense lawns without frequent stops.
If you prefer a quieter, eco-friendly option, electric or cordless mowers reduce noise and emissions. Battery life typically lasts 25 to 45 minutes depending on grass density and mower capacity.
For large or heavy St. Augustine lawns, self-propelled models ease your workload by moving the mower forward, boosting efficiency. Also, pay attention to motor RPM and torque; higher levels usually provide cleaner cuts on dense grass.
Choosing a mower that balances power source and efficiency ensures you get a well-maintained lawn without unnecessary effort or interruptions. It’s all about finding what works best for your yard and your routine.
Maneuverability and Weight
Balancing power with ease of use makes mowing your St. Augustine grass much more enjoyable. You’ll want a lightweight mower, ideally under 70 pounds, to easily navigate uneven terrain without tiring quickly.
Large, durable wheels—10 inches or more—offer better traction and smoother steering through dense, tall grass. A self-propelled model can further reduce the effort needed to push, giving you better control and less fatigue.
Adjustable handles and ergonomic grips let you customize the mower’s height and angle, ensuring comfortable maneuvering regardless of your height. And don’t forget about a tight turning radius—around 15 inches or less—so you can make precise edges and easily get around trees, garden beds, or other landscape features.
This way, you can keep your lawn looking neat without all the hassle.
Grass Clipping Management
How you manage grass clippings plays a crucial role in keeping your St. Augustine grass healthy and vibrant. Choosing a mower with mulching capabilities lets you finely chop clippings, returning valuable nutrients to the soil and encouraging lush growth.
Look for models with a large grass bag or collection system to cut down on how often you need to stop and empty it. This makes your mowing sessions smoother and less frustrating.
Adjustable cutting heights—from about 1.5 to 3.9 inches—help you control clipping length precisely. That way, you can prevent scalping and keep your turf in optimal health.
Regular mowing with proper clipping management avoids excessive buildup that can smother your grass. Plus, it improves airflow and reduces the risk of disease.
Mulching mowers also minimize leftover clippings, which reduces thatch and promotes a dense, healthy lawn. It’s a simple way to help your grass thrive!
Durability and Build Quality
Because St. Augustine grass requires frequent mowing, you need a mower built to last. Look for a heavy-duty steel deck that resists rust and handles regular use without warping.
Reinforced handles and impact-resistant wheels help your mower endure tough yard conditions. Choose one with a robust engine—170cc or higher—to maintain consistent power when tackling dense or overgrown grass. This reduces wear over time.
A well-constructed frame with corrosion-resistant parts prevents damage from moisture and rough terrain. Pay attention to quality craftsmanship, like tight fittings and durable components, to ensure your mower performs reliably season after season.
Prioritizing these durability and build quality features means you won’t have to replace or repair your mower prematurely. That saves you time and money in the long run.
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 prevents overgrowth.
But remember, the growth rate can change depending on the weather. So, it’s a good idea to adjust how often you mow based on that.
Keep an eye on your lawn and mow more or less frequently as needed to get the best results.
What Is the Ideal Cutting Height for St Augustine Grass?
Think of your St. Augustine grass as a well-dressed guest; you’ll want to keep it at 2.5 to 4 inches tall to maintain its elegance and health.
Don’t cut it too short or it’ll lose its charm!
Can I Use a Mulching Mower to Improve St Augustine Lawn Health?
Yes, you can use a mulching mower to improve your St. Augustine lawn health. It recycles grass clippings as natural fertilizer, boosting soil nutrients and moisture retention.
This helps promote a greener, thicker lawn. Just mow regularly!
Are Electric Mowers Quieter Than Gas Mowers for Residential Areas?
You’ll notice electric mowers hum softly like a gentle breeze, much quieter than gas mowers’ roar. They’re perfect for peaceful neighborhoods, letting you mow without disturbing your neighbors or breaking the calm of a sunny afternoon.
It’s nice to keep things low-key, right? Electric mowers help you do just that.
How Do Weather Conditions Affect Mowing Frequency for St Augustine Grass?
You’ll mow St. Augustine grass more often in warm, wet weather since it grows faster, but less during drought or cold spells.
Adjust your schedule to avoid stressing the grass and promote healthy growth. It’s all about paying attention to the weather and how your lawn responds.
Conclusion
Choosing the right mower for your St. Augustine grass can make all the difference. Did you know that St. Augustine thrives best when cut to about 3.5 inches? Keeping your mower sharp and set just right helps maintain that lush, carpet-like lawn you want.
Whether you prefer gas or cordless models, picking a mower with the right features will save you time and keep your grass looking its best all year long. A mower that handles the thick blades of St. Augustine will make your lawn care routine much easier.
In 2027, the best mowers for St. Augustine grass combine power, precision, and ease of use. Investing in a top-notch mower ensures your lawn stays healthy and vibrant, making your outdoor space inviting and beautiful. So, whether you’re mowing a small yard or a larger lawn, choosing the right mower is key to perfect St. Augustine grass maintenance.
