If you maintain a St Augustine grass lawn, you know it thrives with a slightly higher cut (around 2.5 to 4 inches) and benefits from mulching that returns nutrients. Finding a mower that handles these needs without scalping or clumping can be tricky. That is why we focused on WORX models that offer precise height adjustments, efficient mulching, and the battery power to tackle your yard. In this guide, we break down the top WORX mowers for St Augustine grass, from compact push mowers to intelligent robotic options. Whether you have a small patch or half an acre, we have a pick for you.
For more on robotic mowing, check out our guide on the best WORX Landroid with boundary wire for precise perimeter control.
Pros
- Lightweight and easy to push and maneuver, even on slopes
- Powerful brushless motor with long runtime and durability
- Cut-to-Edge design minimizes manual trimming
- Single lever height adjustment with 6 positions for different grass types
- Battery charge indicator keeps you informed of remaining power
Cons
- 17-inch cutting width is narrower than some competitors, requiring more passes on larger lawns
- Not self-propelled, so you must push it manually
- Batteries may not be sufficient for lawns larger than 1/4 acre without additional packs
The WORX WG745 is a 40V cordless lawn mower designed for homeowners with small to midsize yards up to 1/4 acre. It combines the convenience of battery power with the performance of a brushless motor, making it a compelling alternative to gas mowers for those who value low maintenance and quiet operation.
Standout features include the brushless motor 2.0, which offers 40% higher cutting power and longer life than previous generations. IntelliCut technology automatically adjusts cutting speed based on grass density, optimizing runtime and ensuring a clean cut even in thick patches. The 2-in-1 system lets you mulch clippings for fertilizer or bag them for a tidy lawn.
Design and build quality are impressive for the price. At only 40 pounds, it is one of the lightest mowers in its class, and the cut-to-edge deck allows you to mow right up to borders. The collapsible handles and vertical storage option are great space savers in small sheds or garages. The single lever height adjustment offers six positions from 1 to 3 inches.
Potential drawbacks include a 17-inch cutting width, which is narrower than many 20-21 inch models, meaning more passes on larger lawns. It is not self-propelled, so you will need to push it yourself. While the included batteries cover 1/4 acre, larger yards may require purchasing an extra battery pack for uninterrupted mowing.
Overall, the WORX WG745 is an excellent choice for homeowners seeking a lightweight, efficient, and easy-to-store cordless mower. It delivers strong performance for small lawns, and the brushless motor ensures years of reliable service. If your yard is under 1/4 acre and you want to ditch gas and cords, this mower is a smart investment.
Pros
- No boundary wire or local antenna required for precise navigation
- Vision AI obstacle avoidance and cut-to-edge brushes reduce manual trimming
- Unlimited mowing zones, no-go areas, and four precision patterns via app
- V-SLAM sensor fusion keeps navigation reliable in shaded or partially covered areas
- RadioLink extends control beyond standard Wi-Fi range for larger lawns
Cons
- Designed for up to 1/4 acre lawns, so it is not suitable for larger yards.
- Full feature set depends on the app and a stable network connection during setup and operation.
- As a newer release, long-term field performance is not yet widely documented.
The WORX Wire-Free Robot Lawn Mower is designed for homeowners with up to 1/4 acre of grass who want precise, hands-off mowing without the hassle of laying boundary wire. It replaces perimeter cables with RTK Cloud positioning and Vision AI, so the robot learns your lawn, plans efficient routes, and returns to its charging station on its own.
In real-world use, the standout combination of centimeter-level RTK accuracy and V-SLAM sensor fusion keeps navigation stable in both open yards and shaded areas. Vision AI also recognizes common obstacles and border types, helping the mower avoid toys, flower beds, and other objects while cutting closer to edges using wheel brushes and cut-to-edge logic.
The app adds a high level of control: you can create unlimited mowing zones, set no-go areas, customize paths, and choose from Parallel, Checkerboard, Diamond, or Natural patterns. RadioLink connectivity extends communication beyond typical Wi-Fi range, which is useful for larger properties and hard-to-reach corners of the yard.
Build quality appears solid, with a two-wheel driver, durable brushes, spare blades, and a charging station included. The main drawbacks are the 1/4 acre size limit and the need for a smartphone for full setup and control. Since this is a new release, long-term reliability data is still limited, so it is best suited for early adopters who value advanced navigation and convenience.
Overall, the WORX robot mower offers a wire-free, app-driven mowing experience that is hard to match at this level of technology. For homeowners with a smaller lawn who want clean stripes, obstacle avoidance, and minimal setup, it is a compelling choice.
Color: Black/Orange; Size: Up to 1/4 Acre; Dimensions: 22.7 x 18.1 x 11.3 inches; Weight: 39.2 pounds.
Navigation: RTK Cloud precision with Vision AI and V-SLAM sensor fusion; Obstacle avoidance via neural processing; Connectivity: Bluetooth, Wi-Fi, and RadioLink.
In the box: Vision Cloud two-wheel driver, wheel brushes, 6 spare blades, charging station, other accessories, and product guide.
Pros
- Cut-to-edge design reduces need for a trimmer along borders
- Brushless motor extends runtime and improves durability
- Versatile 2-in-1 bagging and mulching with simple conversion
- Six height settings cover early spring to late summer grass
- Compact and lightweight for easy handling and storage
Cons
- 14-inch cutting deck is best suited for lawns under 1/8 acre
- Battery and charger may be sold separately, verify package contents
- No self-propelled drive, requires manual pushing on slopes
The WORX WG735 is a cordless electric lawn mower designed for small yards up to 1/8 acre. It combines a 40V brushless motor with a 14-inch cutting deck, making it an ideal choice for homeowners who want a lightweight, easy-to-store mower without the hassle of gas or cords.
Standout features include the cut-to-edge design that lets you trim right along fences and flower beds, reducing the need for a separate string trimmer. The 2-in-1 functionality allows quick switching between bagging clippings and mulching them back into the lawn. Six cutting heights from 0.8 to 3 inches give you control over grass length throughout the growing season.
The mower is compact and weighs under 28 pounds, so it maneuvers easily around trees and garden beds. The brushless motor runs efficiently, delivering enough power for a full charge to cover a typical small lawn. The PowerShare battery system is a bonus if you already own other WORX tools, as the same batteries can be used across multiple devices.
One limitation is the 14-inch deck width, which means more passes on larger lawns. Also, the mower does not include a self-propelled feature, so you'll need to push it manually. Depending on the package, the battery and charger may need to be purchased separately, so check before ordering.
Overall, the WORX WG735 is a solid choice for small-lot owners who value convenience, maneuverability, and the ability to mulch or bag without extra attachments. It delivers reliable performance with minimal maintenance, making it a worthwhile investment for tidy lawns.
Pros
- Cut-to-edge design eliminates most hand trimming along borders.
- Brushless motor provides longer runtime and greater efficiency.
- Lightweight and compact for easy storage and maneuverability.
- Single-lever height adjustment is quick and tool-free.
- Battery system shares power with other Worx tools.
Cons
- 20V battery may not provide enough runtime for larger lawns without spare batteries.
- 14-inch cutting deck is narrow, requiring more passes on medium-sized lawns.
- No self-propelled feature; manual push only.
The Worx WG733.1 is a 20V cordless lawn mower designed for homeowners with small to medium-sized yards who value precision and ease of use. Its 14-inch cutting deck and compact form factor make it ideal for navigating tight spaces, flower beds, and garden borders where larger mowers struggle.
One standout feature is the cut-to-edge design, which allows the mower to trim grass right up to fences and edging without leaving a strip behind. This reduces the need for a separate string trimmer, saving time and effort. The 2-in-1 capability lets you choose between bagging clippings for a clean look or mulching to return nutrients to the soil.
The brushless motor is a key upgrade over brushed alternatives, providing longer runtime and better efficiency. The 6-position single-lever height adjustment (1 to 3 inches) lets you quickly adapt to different grass conditions. At 21.7 pounds, the mower is lightweight and easy to push, though it is not self-propelled.
Potential drawbacks include the 20V battery's runtime, which may be insufficient for larger lawns without an additional battery. The 14-inch width also means more passes on medium-sized areas. However, for its target audience, these trade-offs are acceptable given the mower's precision and portability.
Overall, the Worx WG733.1 is a reliable choice for small-lot homeowners who want a cordless mower that can edge closely and store easily. It offers good value with its Power Share battery system and brushless motor, making it a smart addition to any lawn care routine.
Pros
- Powerful brushless motor with extended runtime compared to older models.
- Innovative Aerodeck design effectively prevents grass clumping and clogging.
- IntelliCut optimizes battery usage by adjusting power to grass thickness.
- Versatile 3-in-1 mowing options: mulching, bagging, side-discharge.
- Interchangeable batteries compatible with a wide range of WORX tools.
Cons
- Not self-propelled, requiring physical effort to push on sloped or uneven terrain.
- Relies on two 20V batteries instead of a single 40V, which may mean swapping batteries more frequently.
- As a new model with zero reviews, performance in real-world conditions is unverified.
The Worx WG752 cordless lawn mower is designed for homeowners with lawns up to half an acre who want the convenience of battery power without sacrificing cutting performance. This 21-inch walk-behind mower features a brushless motor 2.0 and innovative Aerodeck technology to deliver efficient, clog-free cuts across various grass conditions.
Standout features include IntelliCut, which automatically adjusts motor speed in thick grass to maintain power, and the Aerodeck that increases airflow to prevent clumping. In practice, this means fewer passes and less time spent clearing debris from the deck. The included two 20V 5Ah PowerShare Pro batteries provide solid runtime, and the 4A dual charger gets you back to work quickly.
Build quality is robust with a 55.6-pound weight that feels stable but may be heavy for some users. The collapsible handle and vertical storage design are thoughtful for compact spaces. Height adjustment via a single lever (1.5 to 4 inches) is straightforward, and switching between mulching, bagging, and side-discharge is tool-free.
Potential drawbacks include the lack of self-propulsion, which can make mowing slopes tiring, and the reliance on two 20V batteries rather than a single higher-voltage pack. Additionally, as a newly released model with no customer reviews yet, long-term reliability is unclear.
Overall, the Worx WG752 offers a compelling package of power, efficiency, and versatility for cordless mower buyers. If you value innovative features like Aerodeck and IntelliCut and already own WORX PowerShare tools, this mower is a strong choice for medium-sized lawns.
Pros
- Powerful brushless motor with extended runtime for thick weeds
- Three tools in one saves money and storage space
- Easy push-button line feed eliminates bumping
- Ergonomic adjustable handle and telescopic shaft reduce fatigue
- Wheeled edging guide ensures clean, straight edges
Cons
- 20V system may lack power for very large or dense lawns compared to 40V/80V models
- Zero reviews available at time of analysis, making long-term reliability unclear
- Battery and charger included, but extra battery may be needed for larger yards
The WORX WG173 is a 20V cordless 3-in-1 trimmer, edger, and mini mower designed for homeowners who want a lightweight, battery-powered solution without sacrificing performance. It's ideal for small to medium yards, especially those with varied terrain and tight spaces around gardens, sidewalks, and flower beds.
Its standout feature is the brushless motor paired with a 4.0Ah battery, which delivers gas-like torque through thick weeds while offering 30% more runtime and 2x the cutting efficiency of brushed motors. The 13-inch dual-line head covers more ground quickly, and the electronic push-button line feed lets you advance string instantly without stopping or bumping — a real time-saver.
The 3-in-1 versatility is backed by a 90° pivoting head that adapts to slopes and uneven ground, plus dual support wheels for precise edging along driveways and patios. The integrated flower guard protects your plants, and the adjustable handle and telescopic shaft ensure a comfortable fit for users of different heights. When done, the tool collapses for compact storage.
Potential drawbacks: the 20V system may not have the sustained power for very large or overgrown lawns compared to higher-voltage models, and there are currently no user reviews to gauge long-term durability. Also, while the included battery is good for typical use, larger yards may require a spare battery.
Overall, the WORX WG173 offers excellent value as a versatile, easy-to-use cordless trimmer that simplifies yard maintenance. If you value convenience, adjustable ergonomics, and the ability to trim, edge, and mini-mow with one tool, this is a strong choice — just consider your yard size and power needs.
Buying Guide: What to Look for in a WORX Mower for St Augustine Grass
Cutting Height Range and Adjustability
St Augustine grass is sensitive to scalping. A mower with a wide cutting height range (1.5 to 4 inches) and easy single-lever adjustment lets you maintain the ideal 2.5 to 4 inch height. WORX models like the 40V 21-inch self-propelled mowers offer 7 positions, giving you the flexibility to raise the deck in summer heat.
Mulching Performance
Returning clippings to St Augustine grass provides nitrogen and reduces waste. Look for mowers with dedicated mulching plugs and deck designs that circulate clippings finely. WORX’s AeroDeck technology on the 21-inch models boosts airflow to prevent clumping, a common issue with thick St Augustine.
Battery Runtime for Your Lawn Size
St Augustine lawns can be dense, so battery capacity matters. For yards up to 1/4 acre, a 40V system with two 4.0Ah batteries (like the WG745) delivers enough runtime. Larger lawns benefit from the 40V 5.0Ah PowerShare Pro batteries included with the self-propelled models. Always check the indicated acreage rating.
Cut-to-Edge Design for Borders
St Augustine grass often spreads into flower beds and along fences. A mower with a cut-to-edge deck (like the 14-inch and 17-inch WORX models) reduces the need for trimming. For precise edging, consider pairing your mower with a WORX string trimmer; see our best robot mower blade sharpener guide for maintaining sharp edges.
Final Thoughts
For most St Augustine lawns, we recommend the Worx Cordless Lawn Mower (WG745) if you want a lightweight, maneuverable push mower with excellent cut-to-edge performance and a 2-in-1 mulching/bagging system. If you prefer a hands-off approach and have a flat, open yard, the WORX Robot Lawn Mower for 1/4 Acre uses RTK Cloud and AI to maintain a consistent cut height without any effort from you. Both models respect the needs of St Augustine grass and will keep your lawn looking its best.
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Frequently Asked Questions
What is the best cutting height for St Augustine grass with a WORX mower?
St Augustine grass should be cut at 2.5 to 4 inches. Most WORX mowers offer height adjustments within this range. Use a higher setting during hot months to reduce stress and encourage deeper roots.
Can I use a WORX robot mower on St Augustine grass?
Yes, the WORX Robot Lawn Mower for 1/4 Acre is suitable for St Augustine if you set the cutting height to at least 2.5 inches. Its AI obstacle avoidance and RTK navigation handle uneven growth well. For larger lawns, check our best WORX Landroid L for half acre guide.
Should I mulch or bag St Augustine grass clippings?
Mulching is beneficial because it returns nitrogen to the soil. WORX mowers with mulching plugs and AeroDeck technology produce fine clippings that decompose quickly. Bagging is only needed if the grass is excessively long or if you want a pristine look.
How often should I mow St Augustine grass in 2026?
During peak growing season (spring and summer), mow every 5 to 7 days. In fall and winter, reduce to every 10 to 14 days. Always follow the one-third rule: never remove more than one-third of the leaf blade at a time.
