Last Updated on November 2, 2021 by Mark Brian
Commonly known as Buffalo grass, St. Augustine grass stands out with its flat, broad, dark green blades and carpet texture. Beautiful summer lawns are refreshing, but brown patches or root rot are an absolute nightmare for any lawn owner. St. Augustine grass tends to be luscious but rather prone to lawn diseases.
Many diseases of this grass type appear when the damage is done. To avoid it, proper lawn care remains the only option, of which mowing is one. You can save your lawn by choosing the best lawn mowers for St. Augustine grass and have a stunning summer lawn.
Happy Mowing to You!
Our Top 3 Picks for Best Lawn Mower for St. Augustine Grass – 2021
- Automatic Choke
- Honda GCV170 Engine
- 2 Offset and Stacked Blades
- 4 Brushless Motors
- 48V 100 Ah Li Batteries
- 12 Different Cutting Heights
- 24 HP Kohler Twin Cylinder Engine
- Dual Hydrostatic Transmission
- 50 in. Reinforced Steel Deck
Quick List of Customer Reviews on Best Lawn Mowers for St. Augustine Grass 2021
- Best Overall Lawn Mower: Husqvarna New RedMax RZT
I bought this mower because I have a big property. I realized today that I bought this mower exactly one year ago, and it’s still operating brand new. – Customer Review
- Best Self Propelled Lawn Mower: Honda 663020
I bought this after considering a new Toro personal pace to replace my 15-year old mower. I’m glad I paid more and got this Honda. – Customer Review
- Best Lawn Mower for thick grass: RYOBI RY48ZTR75
Good run time, fast, and much quieter than the neighbor’s ride ons. – Customer Review
- Best Gas Powered Lawn Mower: Craftsman M215
The mower mows pretty well, the self propel works just as fast as you could want it. – Customer Review
- Best Cordless Lawn Mower: Greenworks MO40B411
Love it. It’s small but very tough and strong. Cuts even long grass. I recommend it! – Customer Review
- Best Zero Turn Riding Lawn Mower: Craftsman 17ARFACQ091
Great mower for the price. I’ve had it for about 2 months now and I’ve had absolutely no issues with it. It cuts a beautiful lawn regardless of how high or low you set the blades. – Customer Review
Comparison Table of 6 Best Lawn Mowers for St. Augustine Grass
|Ryobi RY48ZTR75 – (Overall Best Electric Lawn Mower)||Check Price|
|Craftsman 17ARFACQ091 – (Best Zero Turn Riding Lawn Mower)||Check Price|
|Husqvarna New RedMax RZT – (Riding Lawn Mower)||Check Price|
|Honda 663020 – (Best Self Propelled Lawn Mower)||Check Price|
|Craftsman M215 – (Best Gas Powered Lawn Mower)||Check Price|
|Greenworks MO40B411 – (Best Cordless Lawn Mower)||Check Price|
Detailed Reviews of 6 Best Lawn Mower for St. Augustine Grass 2021 by Experts’
1. RYOBI RY48ZTR75 – Best Zero Turn Riding Lawn Mower for Thick Grass
4 Brushless motors
48V 100 Ah Li Batteries
As far as open deck zero turn lawn mowers are concerned, Ryobi RY48ZTR75 is a one of its kind fully electric lawn mower. It can cover acres of St. Augustine grass with a single charge. The engine power gives an extraordinary performance with a 42 inches wide deck and mows the thick grass efficiently.
Ryobi’s black and green steel alloy design is a good respite from the traditional red colored open deck lawn mowers. It has a comfortable leather foam seat with fully automated controls. It weighs around 597 pounds and has dimensions of 48 x 48 x 48 inches.
One of the important things to keep in view is the cutting height of St. Augustine grass. Ryobi gives the liberty to choose between 1.5 inches to 4.5 inches of grass. Moreover, its 42 in. deck can be adjusted in 12 different positions.
When it comes to mowing acres and acres of grass, speed is an essential element. Ryobi’s electric riding lawn mower can go up to 7 MPH forward speed to reduce the time to mow.
The innovative design allows the Ryobi lawn mower to charge faster with a 120V outlet. Its 48V 100 Ah batteries can work constantly for 2 hours. It does not need any tedious maintenance as is required in gas powered lawn mowers.
Considering the amount of power and heavy duty work it does, Ryobi’s electric riding lawn mower is fairly quiet. It is eco friendly and has a drive around mode with disengaged blades, too.
2. Craftsman 17ARFACQ091 – Hydrostatic Riding Lawn Mower
24 HP Kohler Twin Cylinder engine
1.25 inches to 3.75 inches
Equipped with the best blades, the Craftsman 17ARFACQ091 Hydrostatic mower is among the best lawn mowers for St. Augustine grass. It’s 50 in. deck can mow through humid grass with ease. It also features comfortable hand bar grips, a plush seat, and a reliable starting system.
With a sturdy outlook, this machine is a solidly built steel alloy colored in red. The powerful engine with a robust frame does heavy duty mowing job easily. It weighs 656 pounds and has dimensions 84 x 59.75 x 34.75 inches.
Craftsman’s riding lawn mower has a powerful 24 horsepower Kohler twin cylinder engine. It starts easily with a choke free system. It’s durable to cut widespread deep rooted and broad leafed St. Augustine grass. Since it has double cylinders, bypassing ignition switch on riding mower can be tiring.
In warm weather, maneuvering a lawn mower through thick overgrowth is no longer a problem with the Craftsman zero turn lawn mower. It can easily move in rough or uneven areas with ease. Its optimal efficiency gives a great mowing experience.
A high back seat with dual hydrostatic transmission gives a bump free ride. Its padded seat gives extra support to elderly riders. Also, the open deck gives easy access to the foot brake and levers.
It utilizes 3.5 gallons of gas that gives enough mileage for 3 acres of lawn. Engine belts are made of durable material. A quick refill can help trim more grass without heating the lawn mower.
3. Husqvarna New RedMax – RZT Riding Lawn Mower
10 Steel gauges
Fan cooled with Hydro Gear transmission
Husqvarna is a market leader in riding lawn mowers. Its hybrid New RedMax RZT model is no different. It promises to “mow like a pro” with a 54 inches wide deck, air induction transmission, and 23 HP FR series Kawasaki engine. The commercial venture of two companies Husqvarna and RedMax has brought their best features into this one machine.
Popular with riding lawn mowers, Husqvarna New RedMax RZT also has red color. It has a rugged and robust steel frame with an ergonomic control panel. The four anti scalp wheels reduce pressure on St. Augustine grass. It weighs 740 pounds and has dimensions 76 x 8 x 42 inches.
It has a 10 gauge, 54 inches, fabricated steel deck. The cast iron spindle housings sealed with ball bearings improve the blade life and grass cut. 3 in 1 option of mulching, bagging, and side discharge is also available.
Kawasaki engines have tremendous power, and its FR series V Twin engine provides 23 horsepower energy. The engine has an oil pump and oil filter system to keep the machine working in the best conditions.
Compared to Craftsman and Ryobi, this model of Husqvarna excels with 3 blades. The blade engagement by electric choke is an improvement in design. It cuts grass in three series with a blade tip speed of 93.98 m/s.
The hydro gear transmission allows a smooth ride without any hitch. It also has fan cooled pumps to keep the machine from overheating.
It has a removable foot pan. It helps to easily access belts, pulleys, and spindles. Grass residues can also be cleaned up easily.
4. Honda 663020 – Self Propelled Lawn Mower
2 (Offset and stacked)
Flywheel Brake System
21 inch, air flow heavy duty steel deck
Honda is a well known Japanese company, famous for its technical prowess. Its self propelled lawn mower provides increased engine capacity with finer grass cut. It has an additional flywheel handle and twin blades with recoil that make it easy to operate. The automatic choke is an improvement from previous versions.
Honda 663020 self propelled lawn mower is a beautiful combination of tradition and innovation. It has a 16 gauge thick, 21 inches wide steel deck made of heavy duty material. Its steel handle gives a good grip and functions as a brake as well. It weighs 76 pounds.
Torque is the key to smooth mowing. The net torque of the Honda GCV170 engine is around 25000 rpm. It provides 4.8 horsepower energy to cut through even the thickest of St. Augustine grass with ease. Also, it rivals the Troy Bilt TB160 push mower in its engine capacity and productivity.
When it comes to St. Augustine grass, proper mowing is very crucial. Honda’s twin offset and stacked blades provide a detailed cut between 1 to 4 inches with 7 adjustable heights. This MicroCut system also provides finer clippings.
It comes with a three in one, pre installed clip director that makes mulching, bagging, or discharging clippings easier. It can function with all three settings without attachments, which is an upgrade from previous versions requiring an attachment.
Traction matters when mowing on thick humid grass. Its 8 inches wide, plastic wheels assorted with sintered metal ball bearings in the rear wheels provide excellent traction against any kind of slips.
Often self propelled lawn mowers can slip from the hand and cause more damage than good. A flywheel brake system is installed to stop the blades immediately if the lawn mower handles are let go.
5. Craftsman M215 High Wheeled FWD – Self Propelled Lawn Mower
1.25 to 3.75 inches
159 cc Gas powered
Dust Control Detachable Bagger
3 in 1 (Side, rear, and mulching)
Craftsman is an established name in the lawn mower industry for quality and reliability. A range of different mowers is available when it comes to self propelled ones. Craftsman M215 is a great option for mowing big areas of St. Augustine grass in minimum time with a wider deck.
Craftsman M215 is easy to handle machine with an option of side and rear discharge. Its nested red deck compliments the black bushel bag and big tires. It weighs around 80 pounds.
Mowing on hills is a concern for many lawn owners. This Craftsman mower solves the problem with 11 inches wide rear tires that are easy to forward and reverse. Unlike Honda’s lawn mower, its tires are 2 inches wider.
Walk behind lawn mowers like Craftsman offer variable speeds. It allows effortless mowing and mulching of St. Augustine grass.
Different cutting heights are required depending on the grass. The cutting heights can be adjusted in 6 different modes.
It has an automatic choke. The recoil engine starts easily due to the auto choke.
6. Greenworks MO40B411 – Cordless Self Propelled Lawn Mower
4 AH Li Batteries
1.5 to 3.5 inches
Much corded self propelled lawn mowers tend to be a problem when there are large areas to cover. Greenworks as its name symbolizes is one of the best manufacturers of electric lawn mowers in an affordable range. Electric lawn mowers are less noisy and Greenworks lawn mower’s 40V battery with a 17 inches deck gives a heavy duty performance. Its five different adjustment levels provide the independence to mow the St. Augustine grass short or long within the preferred 1 to 3 inches.
A significant improvement is a cordless version of this new Greenworks mower. It has an efficient design with collapsable handles and a single button for height adjustment. It’s 8 in. traction wheels combined with a battery make it easy to move around.
Greenworks MO40B411 mower runs on 4 AH Lithium batteries that provide enough energy to mow one third of an acre in one go. Apart from that, the 40 V electric motor gives equivalent energy to mow the thickest grass as a gas powered one.
Bagging and Mulching
Unlike the mowers mentioned above, it only has two in one features of bagging and mulching. Topsoil fertilization is important for St. Augustine grass, and the mulching can be later converted to fertilizer.
Deck width is as important as blades. The 17 inches wide deck can be adjusted into 5 different heights between 1.5 to 3.5 inches of grass. Mowing St. Augustine grass short can reduce the danger of root rot.
Carrying around an electric lawn mower with no plug nearby seems far fetched idea, but it is possible with a Greenworks mower. It is lightweight and can fit easily in small spaces. It weighs 36 pounds with dimensions of 52.05 x 19.21 x 41 inches.
On a single charge, the battery can mow dense grass for 45 minutes. You may want to consider the proximity of charging ports and how much lawn area is to be mowed. The mower lacks fast charging so you may have to wait in between mowing sessions.
Normally electric mowers are more expensive than gas powered ones. However, the Greenworks mower is cheaper than the Craftsman one. It is efficient and eco friendly.
Types of St. Augustine Grass
St. Augustine grass aka buffalo grass is a warm season grass, often found near coastal and tropical regions having humid air. It has a unique uneven broad leafed texture that makes it popular in Florida and Australia. Different cultivars and varieties of St. Augustine grass are grown in different regions. Some are:
Palmetto St. Augustine grass is the most popular due to its shade tolerance. It is often planted in gardens and orchids with a lot of shade. It has a good wear tolerance and injury recovery as well.
Raleigh St. Augustine grass is usually used in golf courses. It is premium grass that is drought and cold tolerant. However, it needs high maintenance compared to other varieties.
Floratam St. Augustine grass is used in home and commercial spaces It has a carpet like feel. However, it does not have good injury recovery. It is a preferred choice for landscaping.
Things to Consider While Mowing St. Augustine Grass
Warmth and humidity are the lifeblood of St. Augustine grass but every rainbow has its rain. Although it forms a beautiful thick turf, it is prone to different diseases and insects. Precaution seems like the only way out to keep the grass from destruction.
Due to thick turf, St. Augustine grass can trap moisture. It can give rise to the fungus that causes root rot. The signs of rot such as yellowing of grass leaves followed by thinning appear when damage is done. To avoid this, mowing between 1 to 2 inches and the use of a fungicide is recommended.
Over watering and over fertilizing can cause a brown patch. The grass dies gradually and the patch is usually circular. Proper water draining from the lawn can improve conditions.
Proper mowing height varies from cultivar to cultivar of St. Augustine grass. Mowing once a week, between 1.5 to 3 inches of grass is recommended. It helps reduce thatch build up as well.
Compared to Bermuda grass, St. Augustine is less invasive. It is preferred due to its drought resistance and low maintenance.
Watering and Fertilization
Less watering and fertilizing are recommended. Topsoil manure or compost fertilization is enough once every two months or even more.
Up to 90 degrees Fahrenheit or 32 degrees Celsius, St. Augustine grass can flourish well. Its temperature tolerance is fairly high than Zoysia grass. St. Augustine grass needs a lot of sunlight and cannot survive harsh winters.
Shade tolerance is high in St. Augustine grass so it can be planted in shaded lawns with a lot of trees.
Maybe it is good to use St. Augustine grass for landscaping, but not for a soccer game. Its foot traffic tolerance is very low compared to Zoysia grass with high tolerance.
These are half an inch long bugs that prey on grass. Their attack looks like a brown patch. To avoid it, frequent mowing and insecticide spray is used.
Frequently Asked Questions (FAQs)
How to make St. Augustine grass spread quickly?
St. Augustine is a warm season grass. To make it spread quickly, plant in summer, preferably from April to June in well aerated and well drained soil. A regulated watering and fertilizing schedule will allow it to grow and spread faster.
How to make St. Augustine grass thicker?
Mowing St. Augustine grass’s new sods high will do the trick. Frequent high mowing with anti thatching and anti-scarping techniques will make the grass thick in no time.
How to bring back dead St. Augustine grass?
Winter kill is a common threat to St. Augustine grass, but knowing how to get St. Augustine grass to grow back can go a long way. If the grass is dormant, it could be revived with 1 to 2 inches of watering, nitrogen and phosphorus fertilizers, grub control, and high mowing. Completely dead grass needs to be replaced with new sod and subsequent care to make the lawn green again.
What are the best organic fertilizers for St. Augustine grass?
Milorganite Organic Nitrogen Fertilizer and Epsoma Organic Lawn Booster Fertilizers can be found on market shelves. However, you can also use manure, mulched grass, and plant based compost to boost St. Augustine grass’s growth.
Is St. Augustine grass better than Bermuda grass?
Both types of grass have their pros and cons. It depends on the climatic conditions and consumer’s needs. St. Augustine grass has better weed control and shade tolerance, well suited for states like Florida and Hawaii. On the other hand, Bermuda grass has higher injury recovery and foot tolerance, better suited for cold weather.
Taking care of a lawn is a time consuming process especially when it comes to premium grass. Choosing the right lawn mower is also a research intensive task. We have done that for you by bringing you the Top 6 Best Lawn mowers for St. Augustine grass.
I hope this article helped you choose the lawn mower for St. Augustine grass that you were looking for. If you have any queries, please ask. We will be happy to help.