Does your St. Augustine lawn look more like a patchy, uneven mess than the lush green carpet you dream of? You are not alone! St. Augustine grass, with its thick, coarse blades, demands special care. Choosing the wrong lawn mower can shred this beautiful grass, leaving you with a damaged yard and a lot of frustration.
Finding the perfect mower for St. Augustine is tricky. Too much power can scalp the lawn, while blades that aren’t sharp enough will tear the tough runners. You need a machine that cuts cleanly without stressing the grass. We understand these challenges, and that’s why we put this guide together.
Keep reading to discover the best types of mowers, the right blade settings, and the features you absolutely must look for. By the end of this post, you will know exactly which machine will keep your St. Augustine grass healthy, dense, and perfectly manicured all season long. Let’s dive into making your lawn the envy of the neighborhood!
Top Lawn Mower For St Augustine Grass Recommendations
- 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.
- SCISSOR-LIKE CUT: No ripping or tearing of grass blades for a better and healthier lawn
- CUSTOMIZE YOUR CUT: Effortlessly change the height of your cut with 4 cutting positions varying between 1-inche and 2-inches
- MAX MANEUVERABILITY: Features a 16-inch cutting width 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
- Maximize St. Augustine Lawn Thickness & Coverage – Promotes dense, carpet-like turf growth for a fuller, more uniform lawn.
- Enhance Deep Green Color & Lawn Appearance – Boosts rich color for a healthier, more vibrant St Augustine grass lawn.
- Build Strong Roots for Heat & Wear Resistance – Supports deep root systems to improve durability in warm climates and heavy use.
- Fast-Absorbing Liquid Formula for Quick Results – Delivers nutrients efficiently for visible improvements in growth, color, and turf health.
- Made in USA
- 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
- Maximize St. Augustine Lawn Thickness & Coverage – Promotes dense, carpet-like turf growth for a fuller, more uniform lawn.
- Enhance Deep Green Color & Lawn Appearance – Boosts rich color for a healthier, more vibrant St Augustine grass lawn.
- Build Strong Roots for Heat & Wear Resistance – Supports deep root systems to improve durability in warm climates and heavy use.
- Fast-Absorbing Liquid Formula for Quick Results – Delivers nutrients efficiently for visible improvements in growth, color, and turf health.
- Made in USA
- Steady Power, Ideal Cut: The 13 Amp copper motor provides up to 3500 RPM. It performs reliably on most residential lawns, including moderately tall or damp grass, with reduced risk of stalling.
- Single-Lever Height Adjustment with 5 Settings: You can quickly change the cutting height from 0.98 inches to 2.95 inches using a single lever. This design helps adjust to seasonal grass growth without handling each wheel.
- Efficient Clipping Collection: The 13.2-gallon rear bag includes a fill indicator and optimized airflow. It collects up to 98% of grass clippings under typical conditions, which reduces the need for additional cleanup.
- Foldable Handle with Vertical Storage: The handle folds in three simple steps using tool-free cam lock knobs. When folded, the mower can be stored upright to help save storage space.
- Adjustable Handle and Maneuverable Wheels: Three handle height options offer greater comfort for different users. The 6-inch front wheels and 8-inch rear wheels make it easier to move the mower across uneven ground.
- Kills many broadleaf weeds
- Also used in centipede grass
- Provides suppression of crabgrass
- Controls emerged weeds and weeds from seed
Choosing the Right Mower for Your St. Augustine Grass
St. Augustine grass is a beautiful, warm-season turf, but it needs special care. It grows thick and fast. You need the right lawn mower to keep it looking its best without damaging those wide blades. This guide helps you pick the perfect machine.
Key Features to Look For
When shopping for a mower for St. Augustine grass, focus on power and cutting ability.
- **High Torque Engine/Motor:** St. Augustine is dense. You need strong power to push through thick clumps without bogging down.
- **Cutting Height Adjustment:** This grass prefers a higher cut. Look for mowers that adjust up to 3.5 or 4 inches. Cutting too short stresses the grass.
- **Bagging/Mulching Options:** St. Augustine produces a lot of clippings. A good bagging system keeps the lawn tidy. Mulching can return nutrients, but you must do it often.
- **Deck Size:** Larger decks cut more area quickly. For small yards, a 20-inch deck works. For big yards, look for 22 inches or more.
Important Materials for Durability
The material of the mower deck matters a lot. It determines how long your mower lasts.
A **steel deck** offers great strength. However, steel can rust if left wet. Many people prefer **heavy-duty aluminum decks**. Aluminum resists rust completely. It is lighter, too. Look at the wheel material. **Durable plastic or metal wheels** handle rough terrain better than cheap plastic.
Factors Affecting Mower Quality
Quality is often about how the machine handles the stress of thick grass.
Factors That Improve Quality:
- **Self-Propelled Drive:** This feature is almost essential for thick St. Augustine. It moves the mower for you, saving your energy.
- **Washout Ports:** Some higher-quality mowers have ports where you attach a hose to clean the underside. This prevents buildup that slows the blades.
- **Blade Quality:** Sharp, thick steel blades cut cleanly. Dull or thin blades tear the grass, which invites disease.
Factors That Reduce Quality:
Cheap, low-powered engines often struggle with the density of St. Augustine. If the deck feels flimsy, it will shake loose quickly. Poorly designed height adjusters often stick, making it hard to set the right height.
User Experience and Use Cases
How you use your lawn affects your choice.
**Small, flat yards (under 1/4 acre):** A reliable electric (corded or battery) walk-behind mower might work. Battery power offers convenience.
**Medium to large yards (over 1/4 acre) or yards with slopes:** A powerful gas self-propelled mower is highly recommended. The self-propel feature makes climbing slopes much easier. Riding mowers are best for very large properties where time savings are key.
Remember, you should never remove more than one-third of the grass blade height at one time. This means mowing frequently!
10 FAQs About Mowers for St. Augustine Grass
Q: What is the ideal cutting height for St. Augustine grass?
A: You should set your mower deck high. Aim for 2.5 to 3.5 inches, especially during the hottest summer months. Taller grass shades the soil, keeping the roots cool.
Q: Should I use a mulching mower or a bagging mower?
A: Both work, but bagging is often better for St. Augustine. This grass produces large amounts of clippings. Too many clippings left on the lawn block sunlight and cause thatch.
Q: Is a reel mower okay for St. Augustine?
A: Reel mowers provide the cleanest cut, but they require very frequent mowing. Because St. Augustine grows fast, keeping a reel mower sharp enough and mowing often enough can be difficult for most homeowners.
Q: Do I need a high horsepower (HP) engine?
A: Yes, more power helps tremendously. St. Augustine is thick. A high-torque engine prevents the blades from slowing down when they hit dense patches.
Q: Are battery-powered mowers strong enough?
A: Modern, high-voltage battery mowers (like 60V or 80V systems) are strong enough for small to medium St. Augustine lawns. Check reviews to ensure they handle thick turf well.
Q: How often should I sharpen the blades?
A: Sharpen your blades at least twice per mowing season. Dull blades tear the wide St. Augustine blades, making them look brown or ragged at the tips.
Q: Can I use the same mower I use for Bermuda grass?
A: Yes, you can, but you must raise the cutting height significantly when switching to St. Augustine. Bermuda prefers a very short cut.
Q: What is “scalping” the lawn, and how do I avoid it?
A: Scalping means accidentally cutting the grass too short, exposing the soil. Avoid it by ensuring your mower deck is set high and never trying to cut off too much growth in one session.
Q: Is a zero-turn radius (ZTR) mower necessary?
A: ZTRs are fantastic for very large yards (over half an acre) with many obstacles. They are not necessary for average residential lawns.
Q: Why does my mower keep stalling in my St. Augustine grass?
A: This usually means the engine lacks enough power for the density, or the blades are dull and dragging instead of cutting. Also, check if the grass is too wet; never mow wet grass.