Does your St. Augustine grass look patchy and uneven, even after you mow? You bought a beautiful, thick carpet of green, but keeping it perfect feels like a constant battle. The problem often isn’t just the grass; it’s the tool you are using to cut it. Choosing the wrong lawn mower can shred the delicate blades of St. Augustine, leading to brown spots and inviting weeds.
St. Augustine grass has unique needs because it grows thick and spreads with runners, or stolons. A mower that cuts too low or uses the wrong blade action can severely damage this warm-season favorite. Many homeowners waste money on general-purpose mowers that simply aren’t designed for this lush, dense turf. This frustration ends today.
Inside this guide, we break down exactly what features matter most—from cutting height adjustments to the best deck types—to keep your St. Augustine lawn healthy and magazine-ready. We will show you how to match your mower to your yard’s specific challenges so you can finally achieve that perfect, uniform cut. Get ready to discover the secret to a thriving St. Augustine lawn!
Top Lawn Mower For St Augustine Grass Recommendations
- Hand-push reel mower with 16" cutting width, 7-blade ball bearing reel, and 10" composite wheels; Durable steel side plate design
- Versatile Earthwise Power Tools by ALM push lawn mower for cutting bent grass- Bermuda, Zoysia, Centipede, St. Augustine, and Seashore Paspalum
- Alloy steel 7-blade mower stays sharp longer
- A self-cutting mower with an adjustable cutting height of 0.5"-2.5" for clean and even cuts
- An planet-friendly alternative that matches the best gasoline push lawn mowers
- [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
- 3-Year Warranty – Backed by Greenworks 3-year limited tool and battery warranty for dependable long-term ownership. Works with 75+ Greenworks 40V tools(trimmers, blowers, chainsaws...)—expand your cordless toolkit.
- SCISSOR-LIKE CUT: No ripping or tearing of grass blades for a better and healthier lawn
- DESIGNED FOR SMALL LAWNS: CUSTOMIZE YOUR CUT: Effortlessly change the height of your cut with 9 cutting positions varying between 1.1-inches - 2.5-inches
- MAX MANEUVERABILITY: Features an 18-inch deck and 10-inch front wheels for easy navigation around the lawn
- MOTORLESS DESIGN: Environmentally friendly with no gas or batteries needed
- QUALITY MATERIALS: Designed with durable steel blades built to last
- POWERFUL PERFORMANCE: Tackle your yard with 3,600 RPM of power and no gas or oil to maintain
- CORDLESS FREEDOM: Powered by a 2 X 24V MAX 4.0Ah lithium-ion batteries for up to 40 minutes of runtime
- iPOWER TECHNOLOGY: Save energy and gain efficiencies while mowing your lawn with this intelligent and automatic power management system
- 2-IN-1 FUNCTION: Mower includes options for side discharge or mulching
- CUSTOMIZE YOUR CUT: Effortlessly change the height of your cut with 6 cutting positions varying between 1.4-inches and 3.4-inches
- 14-INCH CUTTING WIDTH – Five heat-treated alloy-steel blades provide a scissor-action cut, while 10-inch polymer wheels support maneuverability around smaller lawn areas.
- ADJUSTABLE CUTTING HEIGHT – Adjust the cutting height from 1 to 2.25 inches; verify the maximum height against current product specifications before publishing.
- GRASS CATCHER INCLUDED – Includes a grass catcher for collecting clippings; attach it securely and empty it regularly during mowing.
- MANUAL OPERATION – Requires no gas, oil, batteries or charging and operates without gas-engine exhaust.
- RECOMMENDED LAWN CONDITIONS – Designed for small, relatively level and regularly maintained lawns; remove sticks and mulch before mowing, and expect additional passes through tall, thick or weedy areas.
- One quart treats 3,720 sq ft
- Controls Weeds in St. Augustine and Centipede Grasses
- Package Weight: 1.021 kilograms
- Package Dimensions: 5.842 L x 19.177 H x 12.954 W (centimeters)
- 4-blade reel mower with a cutting width of 14” and durable 8.5” polymer wheels for maximum maneuverability. Lightweight at only 19 pounds. Reel Lawn Mowers are great for small lawns..Deluxe hand-reel mower ideal for most turf grasses.
- This push lawn mower has an adjustable blade height of 0.5”-1.75”. Capable of cutting grass up to 4 inches tall and is less effective on taller grass.
- Manual grass cutter is environment-friendly alternative to other lawn mowers. This push mower is pollution-free, noise-free, low maintenance, lightweight and easy to use.
- A reel mower uses a cutting action that does not bruise or damage the blades of grass. For best results using a reel push mower, mow no more than 1/3 of the grass blade, so that the roots stay intact.
- Increase the amount of overlap while using your push mower if your lawn reaches a height of 4 inches or more. It’s better to mow smaller amounts more frequently than it is to let the grass get long. Try not reel mower when the grass is wet.
- Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
- Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
- Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
- All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
- Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
Choosing the Best Lawn Mower for St. Augustine Grass
St. Augustine grass is a popular choice in warm climates. It creates a thick, beautiful lawn. However, this grass type needs special care. Choosing the right lawn mower is very important. This guide helps you find the perfect machine for your St. Augustine lawn.
Key Features to Look For
When you shop for a mower, certain features truly matter for St. Augustine grass.
Cutting Height Adjustment
St. Augustine grass likes to be cut a bit longer than other types. Look for a mower that cuts at 2.5 to 4 inches high. A good mower lets you easily change the cutting height. This prevents scalping the lawn.
Deck Size and Power
Your yard size decides the deck size. For small yards, a 20-inch deck works fine. For bigger areas, a 42-inch or larger deck saves you time. Ensure the engine has enough power (horsepower or torque) to push through thick, dense St. Augustine growth without bogging down.
Bagging, Mulching, or Side Discharge
St. Augustine grass produces a lot of clippings. Mulching chops the clippings finely, returning nutrients to the soil. Side discharge blows them out the side. Bagging collects everything. Many homeowners prefer mulching or side discharge for this grass type to manage the volume.
Important Materials and Construction
The materials used in the mower affect how long it lasts and how well it cuts.
Deck Material
Steel decks are common and strong. However, aluminum decks offer excellent rust resistance. Since St. Augustine grass often grows in humid areas, rust protection is a big plus.
Blade Quality
Sharp, sturdy blades cut cleanly. Dull blades tear the grass, leaving ragged, brown tips. Look for high-quality, heat-treated steel blades. Some mowers feature specialized “high-lift” blades, which are great for lifting the thick blades of St. Augustine grass before cutting.
Factors That Improve or Reduce Quality
What makes one mower better than another for this specific grass?
Engine Quality
A high-quality engine starts reliably every time. Premium brands often use better engine components. A reliable engine means less frustration when you need to mow quickly.
Maneuverability
St. Augustine lawns often have curves or obstacles. Self-propelled mowers give you better control than push mowers, especially on slopes. Look for mowers with good turning radius or zero-turn capabilities if your yard is complex.
Maintenance Ease
Cleaning the deck after mowing thick grass is a chore. Mowers with easy-access wash ports make cleanup much simpler. Poorly designed mowers become hard to maintain, which reduces their overall quality over time.
User Experience and Use Cases
How the mower feels when you use it matters a lot.
Push vs. Self-Propelled vs. Riding Mowers
If your lawn is very small (under 1/4 acre) and flat, a good quality push mower might work. For most St. Augustine lawns, a self-propelled model saves your energy. If your yard is over half an acre, a riding mower is the best choice for comfort and speed.
Noise Levels
If you have close neighbors or prefer morning mowing, consider electric (battery-powered) mowers. They are much quieter than gas models. Modern battery technology is powerful enough for most residential St. Augustine lawns.
10 Frequently Asked Questions (FAQ) About Mowers for St. Augustine Grass
Q: What is the ideal cutting height for St. Augustine grass?
A: You should aim to keep St. Augustine grass between 2.5 and 4 inches tall. Never remove more than one-third of the blade length at one time.
Q: Should I use a reel mower on St. Augustine grass?
A: Reel mowers provide a very sharp cut, but they are generally not recommended for thick, coarse St. Augustine grass unless you maintain the blades perfectly and mow very frequently.
Q: Are electric mowers strong enough for thick St. Augustine growth?
A: Yes, many modern battery-powered mowers offer enough torque to handle typical St. Augustine lawns effectively, especially those with brushless motors.
Q: Why does my mower struggle with my St. Augustine grass?
A: The mower likely lacks sufficient power (horsepower or torque) or the blades are dull. Thick St. Augustine grass demands more power to cut cleanly.
Q: Is mulching okay for St. Augustine grass clippings?
A: Mulching is often good because it returns nutrients. However, if the grass is very long, you must ensure the mower can finely chop the large volume of clippings.
Q: Should I buy a gas or battery mower for this grass?
A: Gas offers maximum sustained power for very large or overgrown lawns. Battery mowers offer convenience, lower noise, and less maintenance for average yards.
Q: How often should I sharpen the blades?
A: Sharpen your blades at least twice during the growing season. Dull blades damage St. Augustine grass, making it vulnerable to disease.
Q: What kind of wheel size is best for uneven St. Augustine yards?
A: Larger rear wheels (often found on self-propelled models) help the mower roll smoothly over bumps and slight slopes common in established lawns.
Q: Do I need a special blade type?
A: While standard blades work, a high-lift blade helps lift the thick, horizontal runners of St. Augustine before cutting, resulting in a cleaner finish.
Q: Can I use a used mower without checking its condition?
A: It is risky. Always check the engine compression and ensure the deck is solid, not rusted through, especially when buying used equipment for demanding grass like St. Augustine.