Caring for a lush, green lawn can be a rewarding experience, and for those with beautiful St. Augustine grass, finding the right mower makes all the difference. This particular grass type has unique needs, like its broad blades and tendency to spread, which means you need a mower that can handle it effectively without scalping or causing damage. Luckily, there are some fantastic options out there designed to keep your best mower for st augustine grass performing beautifully.
Having spent countless hours researching and analyzing various models, I've honed in on a few standouts that consistently impress. We'll dive into which mowers offer the best cutting performance, ease of use, and durability for this specific grass. Get ready to discover the perfect machine to maintain that enviable lawn.
Comparison Chart of Best Mower for St Augustine Grass
List of Top 5 Best Best Mower for St Augustine Grass
Selecting the right mower involves looking at power source, cutting width, and ease of maneuverability, especially for St. Augustine grass which can be a bit tougher than other varieties. We've evaluated models based on how well they bag, mulch, and side-discharge clippings, as well as their build quality and user feedback.
Below are the list of products:
1. Greenworks 40V 16" (Push) Cordless Lawn
This Greenworks model is an excellent choice for smaller to medium-sized yards, offering a clean cut without the fuss of gas and oil. Its 16-inch deck is designed for maneuverability, making it simple to navigate around St. Augustine's broader blades. The push-button start ensures you can get going in seconds, and its compatibility with over 75 other Greenworks tools means it can be part of a larger, versatile outdoor power equipment system.
Why I picked it
In our research, the Greenworks 40V 16" stand out for its user-friendly design and its ability to deliver a consistently good cut on various grass types. It’s particularly well-suited for maintaining the characteristic dense growth of St. Augustine grass.
Key specs
- Power Source: Battery (4.0Ah included)
- Cutting Width: 16 inches
- Weight: 35.5 lbs
- Deck Material: Steel
- Features: Push-button start, 7-position height adjustment (1.18" to 3.62"), 3-in-1 mulching/bagging/side discharge
Real-world experience
Aggregate user reviews frequently mention how quiet this mower is compared to gas models, making it a pleasure to use even during early morning hours. The lightweight design makes it easy to push, and verified buyers appreciate the straightforward setup right out of the box for quick yard maintenance.
Trade-offs
Some users have noted that for larger yards, the 4.0Ah battery might require a second one for continuous mowing, especially if the grass is thick or damp. The 16-inch cutting width, while excellent for maneuverability, means more passes for larger areas.
1. Greenworks 40V 16" (Push) Cordless Lawn
2. PowerSmart EasyGlide 21-Inch Gas Lawn Mower
If you prefer the robust power of gas, this PowerSmart EasyGlide is a strong contender. Its 21-inch steel deck provides a wider cutting path, which is ideal for larger lawns or for tackling St. Augustine grass efficiently. The 144cc 4-stroke OHV engine offers reliable performance, and the 3-in-1 functionality (mulch, bag, side discharge) gives you versatility in how you manage grass clippings.
Why I picked it
This gas mower impressed us with its sturdy construction and powerful engine, making it a capable option for yards with thicker St. Augustine growth. The wider deck means less time spent mowing, and the ease of height adjustment is a definite plus.
Key specs
- Engine: 144cc 4-Stroke OHV Gas Engine
- Cutting Width: 21 inches
- Deck Material: Steel
- Features: Push walk-behind, 3-in-1 mulch/bag/side discharge, 6-position height adjustment (1.25" to 3.75")
Real-world experience
Verified buyer feedback often highlights the dependable starting of this mower, a common concern with gas engines. Many users find the 21-inch deck significantly speeds up their mowing routine compared to smaller models, and the 3-in-1 system works effectively for different lawn conditions.
Trade-offs
As with any gas mower, you'll need to manage oil and gasoline, and it will be louder than electric counterparts. Some reviewers mention that the bag fill indicator can sometimes be a bit finicky, requiring manual checks.
2. PowerSmart EasyGlide 21-Inch Gas Lawn Mower
3. EGO POWER+ Electric Lawn Mower
The EGO POWER+ self-propelled mower is a fantastic option for those looking for premium features and performance without the noise and emissions of gas. Its 21-inch deck and self-propelled capability make mowing effortless, even on St. Augustine grass that might be a bit thicker. The Select Cut and Touch Drive system offers advanced cutting and maneuverability, and it comes with a substantial 56V 7.5Ah battery and rapid charger.
Why I picked it
For a premium electric experience, this EGO POWER+ model really stands out. Its combination of self-propulsion, advanced cutting technology, and a high-capacity battery means it can handle substantial lawns and demanding grass types with ease.
Key specs
- Power Source: Battery (56V 7.5Ah included)
- Cutting Width: 21 inches
- Deck Material: Steel
- Features: Self-propelled with Touch Drive, Select Cut™ system, 6-position height adjustment (1.25" to 4"), LED headlights, rapid charger
Real-world experience
Verified buyers frequently praise the smooth operation and the intuitive self-propelled feature, noting how it significantly reduces fatigue. The battery life is consistently reported as impressive, often enough to complete a half-acre yard, and the cutting quality is consistently rated as excellent for various grass types.
Trade-offs
This option represents a higher investment, and while the battery is powerful, users with very large properties might still consider purchasing an additional battery for extended use or if they tend to let their grass grow longer between cuts.
3. EGO POWER+ Electric Lawn Mower
4. Greenworks 60V 21" Brushless (Push) Cordless
Stepping up in power from the 40V model, this Greenworks 60V mower offers a wider 21-inch deck and a more potent brushless motor. This combination means more efficient cutting and better performance on thicker St. Augustine grass, while still maintaining the benefits of cordless operation. It’s equipped with a 5.0Ah battery and rapid charger, and features like LED lights and IPX4 water resistance add to its practicality.
Why I picked it
This 60V Greenworks mower is built for those who want more power and coverage than smaller electric mowers offer, without sacrificing the convenience of battery power. Its robust performance and wider cut make it very suitable for maintaining St. Augustine lawns.
Key specs
- Power Source: Battery (5.0Ah included)
- Cutting Width: 21 inches
- Deck Material: Steel
- Features: Brushless motor, push operation, 4-in-1 mulching/bagging/side discharge, 7-position height adjustment (1.18" to 3.74"), LED lights, IPX4 water resistance
Real-world experience
Aggregate user reviews highlight the substantial upgrade in power and run-time compared to lower-voltage Greenworks models. Many appreciate the thoughtful additions like LED headlights for twilight mowing and the overall solid build quality that contributes to a durable feel.
Trade-offs
While more powerful, this 60V model is heavier than its 40V counterpart, which might be a consideration for users with mobility issues. The 5.0Ah battery, while good, might still be the limiting factor for very large half-acre lots if the grass is particularly dense.
4. Greenworks 60V 21" Brushless (Push) Cordless
5. BLACK+DECKER Electric Lawn Mower
For very small yards or specific edging tasks, the BLACK+DECKER 3-in-1 combo offers a unique solution. This corded electric mower doubles as a string trimmer and edger, making it incredibly versatile for tight spaces or detailed lawn care. While it's not designed for large lawns, its 12-inch cutting width and lightweight design make it easy to handle and store, and it's a cost-effective way to maintain St. Augustine grass in smaller areas.
Why I picked it
This BLACK+DECKER model is a practical choice for those with small lawns or specific needs where a multi-tool approach is beneficial. Its ability to transition from mowing to trimming provides excellent value and convenience for confined spaces.
Key specs
- Power Source: Corded Electric (6.5 Amp)
- Cutting Width: 12 inches
- Weight: 13.4 lbs
- Features: 3-in-1 electric mower, string trimmer, and edger combo, automatic feed system, adjustable height
Real-world experience
Verified buyer feedback indicates this unit is a lifesaver for small patios, townhouses, or areas with intricate landscaping. The ease of switching between functions and its lightweight nature are frequently cited as major benefits, making it simple to maintain small patches of St. Augustine grass.
Trade-offs
The primary limitation is the corded power source, which restricts the mowing area and requires careful attention to avoid cutting the cord. The 12-inch deck is also quite narrow, meaning it's not practical for anything larger than a small residential lot.
5. BLACK+DECKER Electric Lawn Mower
How I picked
When selecting the best mowers for St. Augustine grass, my evaluation process focused on several key areas that directly impact performance and user satisfaction for this specific turf type. I looked at the cutting deck design and width, ensuring they could handle the broad blades of St. Augustine without scalping, even on uneven terrain.
Power source was also critical; I compared the consistent torque of gas engines against the steadily improving power and quieter operation of modern battery-powered mowers.
I also considered the ease of height adjustment, as St. Augustine typically needs to be cut at a slightly higher setting (around 2.5 to 4 inches) than some other grasses to maintain its health and density. Maneuverability, especially for push mowers, was assessed, looking at how lightweight and easy they are to guide around obstacles and the lawn’s contours. Finally, user reviews and reported durability were weighted heavily, helping me identify models that users consistently find reliable and effective over time for their St.
Augustine lawns. I didn't test long-term durability beyond typical seasonal use, relying on aggregate buyer feedback for extended lifespan insights.
Buying guide — what actually matters for best mower for st augustine grass
When you're hunting for the perfect mower for your St. Augustine lawn, keep these crucial factors in mind to ensure you get a machine that works with, not against, your grass. It's not just about the brand; it's about how the mower's features align with St. Augustine's specific needs.
Cutting Width and Deck Design
The width of the cutting deck directly impacts how quickly you can mow. For St. Augustine grass, which can be dense and spread vigorously, a wider deck (20-21 inches) can significantly cut down on mowing time compared to narrower 16-inch models. Equally important is the deck's design; it should be able to lift grass blades effectively for a clean cut without tearing.
Look for mowers with decks that offer a range of cutting heights, as St. Augustine often thrives when kept at a slightly higher blade setting, typically between 2.5 to 4 inches, to protect its roots and conserve moisture.
Power Source: Gas vs. Electric (Battery)
The choice between gas and electric often comes down to personal preference and yard size. Gas mowers typically offer more raw power, which can be beneficial for very thick St. Augustine growth or larger properties. However, they require more maintenance (oil changes, spark plugs, fuel management) and are louder.
Battery-powered electric mowers are quieter, require less maintenance, and are generally easier to start. As battery technology improves, many electric models offer sufficient power and run-time for most residential lawns, including those with St. Augustine, without the hassle of cords or fuel.
Ease of Height Adjustment
St. Augustine grass does best when mowed at a higher setting, usually between 2.5 and 4 inches. This helps shield the soil from direct sun, reducing water loss and preventing weed invasion. Therefore, a mower with an easily accessible and reliable height adjustment system is vital.
Lever-style adjustments that change all four wheels simultaneously are generally the most convenient and quickest to operate. Aim for a mower that offers at least 4-5 distinct height settings within this optimal range for your grass.
Maneuverability and Weight
For St. Augustine lawns, which can have a denser, more intricate growth pattern due to their spreading nature, maneuverability is key. Push mowers should be lightweight and have smooth-rolling wheels to make navigating turns and tight spots easier. Self-propelled models can significantly reduce the physical effort required, especially on slopes or larger areas, and are often preferred by those who want a less strenuous mowing experience.
Consider how the mower's balance feels and how easily it can be turned without snagging.
Mulching, Bagging, or Side Discharge
Most modern mowers offer multiple options for grass clippings. Mulching is often preferred for St. Augustine grass, as it returns vital nutrients to the soil, promoting a healthier lawn. However, if you have excessive thatch buildup or are cutting very long grass, bagging might be necessary to prevent matting.
Side discharge is useful for quickly clearing large areas. Ensure the mower you choose performs well in the clipping management system you prefer; some mowers excel at mulching, while others are better suited for bagging.
Frequently Asked Questions (FAQ)
Is a mulching mower best for St. Augustine grass?
Yes, a mulching mower is often ideal for St. Augustine grass. Mulching chops grass clippings into fine pieces and returns them to the lawn, acting as a natural fertilizer and helping to retain soil moisture, which is beneficial for St. Augustine’s growth cycle.
This process helps build a healthier turf over time by reintroducing organic matter into the soil.
How high should I cut St. Augustine grass?
St. Augustine grass generally thrives when cut at a higher setting, typically between 2.5 to 4 inches. Cutting too short can stress the grass, making it more susceptible to pests, diseases, and drought conditions. Maintaining a higher blade height helps shade the soil, conserve moisture, and create a denser, more resilient lawn that outcompetes weeds.
What kind of mower is too powerful for St. Augustine grass?
Generally, no mower is inherently "too powerful" for St. Augustine grass if used correctly. The concern isn't usually excessive power but rather incorrect operation, such as mowing too low or with dull blades, which can damage the grass regardless of the mower's engine size or type. A mower that allows for precise height control and has sharp blades will perform well.
Can I use a riding mower on St. Augustine grass?
Yes, you can use a riding mower on St. Augustine grass, especially for larger lawns. However, ensure the riding mower's deck is set to an appropriate height (2.5-4 inches) to avoid scalping. The weight of a riding mower can sometimes compact soil if used frequently on the same paths, so varying your mowing pattern can be beneficial for lawn health.
How often should I mow St. Augustine grass?
The frequency of mowing St. Augustine grass depends on its growth rate, which is influenced by factors like sunlight, watering, and fertilization. During its active growing season (typically warmer months), you might need to mow once a week. During slower growth periods, mowing every 10-14 days might suffice.
The rule of thumb is to never remove more than one-third of the grass blade height at any single mowing.
Final verdict
For those aiming for a pristine St. Augustine lawn, the Greenworks 40V 16" (Push) Cordless Lawn Mower stands out as an excellent all-around choice, offering ease of use and a clean cut for smaller to medium yards. If you have a larger property or prefer the robust performance of gas, the PowerSmart EasyGlide 21-Inch Gas Lawn Mower provides the power and wider cut needed for efficient mowing. For a premium electric experience with self-propulsion, the EGO POWER+ Electric Lawn Mower is a top-tier option that makes yard work significantly easier.
Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation, I only suggest gear I'd actually buy myself.
