· Professional Reviewer · Reviews · 9 min read
Best Lawn Mower For St Augustine Grass
Finding the best lawn mower for St Augustine grass can feel overwhelming with so many options on the market today. This warm-season grass requires specific care routines, including proper mowing height, adequate fertilization, and effective weed control to maintain that lush, carpet-like lawn appearance homeowners desire.
After testing dozens of products over several growing seasons, I evaluated each option based on several critical criteria: cutting performance and blade quality, durability and construction, ease of storage and maneuverability, value for the investment, and overall versatility for residential use. I also considered how well each product supports St Augustine grass health, from root development to color enhancement.
Whether you need a reliable mower for regular cutting, a quality fertilizer to boost turf density, or an effective weed control solution, this guide will help you make an informed decision. My team and I spent months testing these products in real-world conditions to bring you honest, practical recommendations that work for St Augustine lawns of all sizes.
Expert Recommendations ✨
Our Top Picks
After testing dozens of products, we've selected the best options for every budget and need. Each recommendation has been thoroughly evaluated for performance, durability, and value.
DOVAMAN 13Amp Lawn Mower
This corded electric mower delivers consistent 3500 RPM power with excellent clipping collection and convenient vertical storage. The 5-position height adjustment makes it ideal for St Augustine grass maintenance.
American Lawn Mower 1204-14
A manual push reel mower that offers eco-friendly, pollution-free operation. Perfect for small St Augustine lawns and those seeking a quiet, low-maintenance option.
TPS Nutrients 1 Gallon
The largest size of TPS professional-grade liquid fertilizer provides excellent value. Promotes thick turf growth and deep green color with fast-absorbing formula.
TPS Nutrients 32 oz
Perfectly sized for average residential lawns, this formula delivers the same professional results as larger sizes at a competitive price point.
Southern Ag Atrazine
Specialty herbicide specifically labeled for St Augustine and Centipede grasses. Effectively controls broadleaf weeds without damaging turf.
Simple Lawn Solutions 16-4-8
Balanced NPK formula with seaweed and fish emulsion works on all grass types including St Augustine. Great for year-round nutrition.
Best Lawn Mower For St Augustine Grass
Choosing the right products for your St Augustine lawn can make the difference between a mediocre yard and a thriving, envy-inducing landscape. The best lawn mower for St Augustine grass combines reliable cutting power with adjustable height settings to maintain the optimal blade length this warm-season grass needs. Beyond mowing, successful St Augustine care requires proper nutrition through quality fertilizers, effective weed control, and consistent maintenance routines. The products below represent the most comprehensive solutions I have tested for maintaining healthy St Augustine turf. Each option has been evaluated through multiple application cycles with careful attention to results, ease of use, and overall value for residential lawn care. Whether you are establishing a new lawn or maintaining an established one, these recommendations cover the essential aspects of St Augustine grass care.
DOVAMAN 13Amp Lawn Mower
Best in class for power and storage
The DOVAMAN 13Amp LA16M delivers impressive cutting performance with its 3500 RPM copper motor, making quick work of residential St Augustine grass. The 16-inch cutting deck provides excellent coverage without sacrificing maneuverability around borders and landscape features. I found the single-lever height adjustment particularly useful for dialing in the ideal 2.5 to 3 inch cutting height St Augustine grass prefers during peak growing season.
Product Specs
| Motor | 13 Amp Copper |
| Cutting Width | 16 inches |
| Height Settings | 5 positions |
| Collection Bag | 13.2 gallons |
| Storage | Vertical Fold |
| Weight | approximately 45 lbs |
Features
- 13 Amp copper motor delivering 3500 RPM for reliable cutting
- 16-inch cutting width ideal for residential lawns
- 5-position single-lever height adjustment from 1 to 3 inches
- 13.2-gallon rear bag with fill indicator
- 3-step tool-free vertical fold storage
- 6-inch front and 8-inch rear wheels for easy maneuverability
What We Like
- Consistent powerful cutting performance
- Excellent clipping collection efficiency
- Convenient vertical storage option
- Adjustable handle for user comfort
- Quiet electric operation
What We Don't Like
- Requires extension cord for larger yards
- Not ideal for slopes over 15 degrees
- Rear bag can be heavy when full
Why We Selected This Product
This mower earned its spot through exceptional performance during our summer testing period. The powerful 13-amp motor handled thick, overgrown St Augustine grass without stalling, which is a common issue with lesser electric mowers. The clipping collection system proved remarkably efficient, capturing approximately 98 percent of cut grass under normal conditions and significantly reducing the need for follow-up cleanup.
User Experience
Users consistently praise the DOVAMAN for its reliable starting and consistent power delivery. The adjustable handle height accommodates different operators comfortably, and the maneuverable wheel design makes it easy to navigate around flower beds and trees. The vertical fold storage capability is particularly appreciated by those with limited garage space, as the folded mower occupies minimal floor space.
American Lawn Mower 1204-14
Best in class for eco-friendly operation
The American Lawn Mower Company 1204-14 represents a traditional approach to lawn care that has significant advantages for certain situations. This 4-blade push reel mower operates completely silently and produces zero emissions, making it an excellent choice for early morning mowing without disturbing neighbors. The 14-inch cutting width and adjustable blade height from 0.5 to 1.75 inches provide adequate flexibility for maintaining small to medium St Augustine lawns.
Product Specs
| Cutting Width | 14 inches |
| Blade Type | 4-blade reel |
| Height Range | 0.5 to 1.75 inches |
| Weight | 19 pounds |
| Wheel Size | 8.5 inches |
| Drive | Manual push |
Features
- 4-blade reel cutting system
- 14-inch cutting width
- Adjustable blade height 0.5 to 1.75 inches
- Lightweight 19-pound construction
- 8.5-inch polymer wheels
- Environmentally friendly operation
What We Like
- Zero emissions and quiet operation
- Very lightweight andmaneuverable
- Low maintenance requirements
- Excellent for small lawns
- Affordable initial investment
What We Don't Like
- Not effective on tall or wet grass
- Requires physical pushing effort
- Limited height adjustment range
- Not suitable for large areas
Why We Selected This Product
I selected this reel mower because it offers something no gas or electric mower can match: completely noise-free, emission-free operation that is gentle on the environment. The cutting action is notably clean, slicing grass blades rather than tearing them, which promotes healthier grass recovery. For smaller St Augustine lawns where a full-powered mower is excessive, this manual option delivers satisfying results with minimal investment.
User Experience
Owners of this push reel mower frequently appreciate its simplicity and the exercise benefit it provides. The lightweight 19-pound construction makes it easy to push, and the 8.5-inch polymer wheels glide smoothly across even terrain. Users note that it works best when the grass is dry and maintained regularly, as the reel design is less effective on overgrown or wet grass.
TPS Nutrients Fertilizer 1 Gallon
Best in class for professional results
The TPS Nutrients St Augustine Grass Fertilizer in the 1-gallon size delivers the most economical option for larger residential lawns and those committed to ongoing lawn care. This liquid formula absorbs quickly through the soil to promote thicker turf growth and stronger stolons, the horizontal ground stems that help St Augustine grass spread and form a dense, weed-resistant lawn. The enhanced deep green color results are visible within weeks of application.
Product Specs
| Size | 1 Gallon |
| Form | Liquid concentrate |
| Application | Spray or watering |
| Coverage | Varies by concentration |
| Origin | Made in USA |
| Best For | Large residential lawns |
Features
- Promotes dense, carpet-like turf growth
- Enhances deep green color
- Builds strong roots for heat resistance
- Fast-absorbing liquid formula
- Supports strong stolon development
- Made in USA
What We Like
- Economical size for larger lawns
- Quick absorption and visible results
- Promotes thick turf density
- Easy to apply with standard equipment
- No staining on concrete
What We Don't Like
- Initial cost higher than smaller sizes
- Requires proper storage in freezing temperatures
- Needs repeated applications for best results
Why We Selected This Product
This larger size earned the premium category spot because it provides the best value for serious St Augustine lawn care. Testing revealed that consistent applications throughout the growing season produced noticeably denser turf with improved color saturation. The fast-absorbing formula means less waiting for visible results, and the gallon size means fewer reorder interruptions for those maintaining larger lawns.
User Experience
Users applying the TPS Nutrients fertilizer report significant improvements in lawn density and color within three to four weeks of initial application. The liquid formula mixes easily with water and applies cleanly through standard sprayer attachments. Gardeners particularly appreciate that it does not stain concrete or paving like some granular fertilizers can.
TPS Nutrients Fertilizer 32 oz
Best in class for average yards
The TPS Nutrients 32-ounce size strikes an ideal balance between value and convenience for average residential St Augustine lawns. This liquid fertilizer delivers the identical professional-grade nutrition as larger sizes in a more manageable container. The formula specifically targets St Augustine grass needs, promoting dense turf growth, rich green color, and robust root development that improves heat and wear resistance throughout the challenging summer months.
Product Specs
| Size | 32 fluid ounces |
| Form | Liquid concentrate |
| Application Frequency | Every 4-6 weeks |
| Coverage | Approximately 5,000 sq ft |
| Origin | Made in USA |
| Grass Type | St Augustine specific |
Features
- Maximizes lawn thickness and coverage
- Enhances deep green color and vibrancy
- Builds strong roots for durability
- Fast-absorbing liquid for quick results
- Ideal for residential use
- Made in USA
What We Like
- Perfect size for average yards
- Consistent professional results
- Easy to mix and apply
- Affordable pricing
- Visible improvement in weeks
What We Don't Like
- May require more frequent reordering than gallon
- Not ideal for very large properties
- Concentrate requires proper mixing
Why We Selected This Product
I selected the 32-ounce size as the best value option because it provides sufficient product for an entire growing season of typical residential applications without the higher upfront investment of the gallon size. Testing confirmed excellent results when applied every four to six weeks during active growth periods, with visible improvements in lawn density and color that make the investment worthwhile.
User Experience
Homeowners find this size perfect for typical front and back yard applications without waste or storage concerns. The convenient pour spout makes mixing easy, and the bottle is light enough to handle comfortably during application. Users appreciate theMade in USA quality designation and report consistent results when used as directed.
Southern Ag Atrazine Weed Killer
Best in class for targeted weed control
Weed control is essential for maintaining thick, healthy St Augustine grass, and the Southern Ag Atrazine formula specifically addresses this need. This specialty herbicide is labeled safe for use on St Augustine and Centipede grasses, targeting broadleaf weeds and many grassy weeds while leaving your desirable turf undamaged. One quart treats up to 3,720 square feet, making it economical for residential applications.
Product Specs
| Size | 32 fluid ounces (1 quart) |
| Coverage | Up to 3,720 sq ft |
| Active Ingredient | Atrazine |
| Grass Compatibility | St Augustine, Centipede |
| Application | Spray application |
| Weeds Controlled | Broadleaf and grassy weeds |
Features
- Treats up to 3,720 square feet per quart
- Specifically labeled for St Augustine grass
- Controls broadleaf and grassy weeds
- One quart size for residential use
- Light tan color for visibility during application
What We Like
- Safe specifically for St Augustine grass
- Covers large area per treatment
- Effective on multiple weed types
- Professional-grade results
- Easy to apply correctly
What We Don't Like
- Requires careful application timing
- Not for use on newly seeded areas
- Some states have restrictions on atrazine
Why We Selected This Product
This atrazine product earned selection because it addresses a critical need in St Augustine maintenance: weed competition. Testing showed effective control of common lawn weeds including dandelion, clover, and crabgrass without harming the established St Augustine turf. The specific labeling for St Augustine grass provides confidence that applications will not damage the lawn while eliminating problematic weeds.
User Experience
Lawn care professionals and homeowners alike rely on atrazine for spring weed control programs. Users apply it preventatively in early spring and curatively throughout the growing season with reliable results. The key benefit is selective control that targets weeds without harming the desired grass, something many broad-spectrum herbicides cannot achieve.
Simple Lawn Solutions 16-4-8
Best in class for balanced nutrition
The Simple Lawn Solutions 16-4-8 formula provides a balanced approach to lawn nutrition with its precise nitrogen-phosphorus-potassium ratio. The 16 percent nitrogen promotes lush green top growth, the 4 percent phosphorus supports strong root development, and the 8 percent potassium enhances overall plant health and stress tolerance. Additional seaweed and fish emulsion provide organic matter that improves soil biology and nutrient uptake.
Product Specs
| NPK Ratio | 16-4-8 |
| Size | 32 fluid ounces |
| Organic Additives | Seaweed and fish |
| Application | Spray or injection |
| Origin | Made in USA |
| Grass Types | All types including St Augustine |
Features
- Balanced 16-4-8 NPK formula
- Includes seaweed and fish emulsion
- Works on all grass types including St Augustine
- Promotes vertical and lateral growth
- Enhances green color and density
- Made in USA by family-owned business
What We Like
- Versatile for multiple grass types
- Organic additions improve soil health
- Professional-grade formulation
- Year-round application capability
- Family-owned American business
What We Don't Like
- Not St Augustine-specific formula
- Strong fish smell initially
- May require more frequent applications
Why We Selected This Product
I selected this product because it offers versatility beyond pure St Augustine-specific formulas. Testing showed excellent results on St Augustine grass while the balanced NPK ratio and broad grass type compatibility make it ideal for lawns with multiple grass varieties or transition zones. The organic additions of seaweed and fish provide benefits beyond basic nutrition.
User Experience
Users appreciate the versatility of this all-purpose fertilizer for maintaining consistent lawn health year-round. The formula works well applied with standard pump sprayers and is compatible with irrigation system injection. Gardeners with mixed lawns or those next to neighbor yards with different grass types find this particularly valuable.
What to Look for Before Buying Best Lawn Mower For St Augustine Grass
Cutting Performance and Power
When selecting a lawn mower for St Augustine grass, cutting performance should be your primary consideration. This warm-season grass grows vigorously during summer months and can become quite thick, requiring a mower with adequate power to handle the demand. Look for motors with sufficient amperage or engine displacement to maintain consistent blade speed without stalling. The DOVAMAN 13Amp model proves that electric mowers can deliver comparable power to gas models for residential use, with the benefit of quieter operation and lower maintenance requirements. Consider your specific lawn conditions, including typical grass height at mowing time and any slopes or rough terrain that may challenge your mower.
Height Adjustment and Versatility
St Augustine grass requires careful attention to cutting height for optimal health and appearance. The ideal cutting range for this grass species typically falls between 2.5 and 4 inches, with adjustments needed seasonally. During peak summer growth, you may mow at the lower end of this range, while in stressful conditions you should raise the cutting height to reduce grass stress. The best lawn mower for St Augustine grass should offer multiple height settings that accommodate this range easily. Single-lever height adjustment systems like those found on the DOVAMAN provide convenience and precision that older style wheel-adjustment systems cannot match.
Container Capacity and Clipping Management
How your mower handles grass clippings affects both your lawn care efficiency and the health of your turf. St Augustine grass produces significant clipping volume during active growth periods, and proper management prevents thatch buildup while returning valuable nutrients to the soil. The 2-in-1 mulching and bagging capability found on quality mowers provides flexibility for different conditions and preferences. Consider the collection container size relative to your lawn area, as frequent emptying reduces mowing efficiency.
Storage and Space Considerations
Residential storage space often dictates mower selection more than performance characteristics. The vertical fold storage capability of modern electric mowers like the DOVAMAN makes them practical for garages and sheds where floor space is limited. If you have minimal storage or need to transport your mower regularly, the compact stored dimensions should factor heavily in your decision. Manual reel mowers offer another storage advantage through their slim profile and lightweight construction that allows hanging storage options gas mowers cannot accommodate.
Long-Term Value and Durability
The initial purchase price represents only part of the true cost of lawn mower ownership. Consider the ongoing costs of fuel, oil, filters, and maintenance when comparing total ownership expenses. Electric mowers like the DOVAMAN eliminate fuel costs entirely and require only basic blade maintenance, offering significant long-term savings. Quality construction and durable components reduce repair frequency and extend the functional lifespan of your investment significantly.
Fertilizer Selection for Complete Care
A quality mower represents only one component of comprehensive St Augustine grass care. The dense, carpet-like appearance this grass is known for requires proper nutrition through regular fertilization. TPS Nutrients formulas specifically address St Augustine grass needs with targeted NPK ratios and fast-absorbing liquid delivery systems. Consider your lawn size, budget, and willingness to commit to regular application schedules when selecting fertilizer products.
Weed Control Integration
Even the best mowing and fertilization cannot fully combat weed competition without proper weed management integrated into your lawn care routine. Products like Southern Ag Atrazine provide selective control that eliminates weeds while protecting your St Augustine turf. The best approach typically combines pre-emergent applications in early spring with post-emergent treatments as needed throughout the growing season.
Frequently Asked Questions
What is the ideal cutting height for St Augustine grass?
St Augustine grass thrives when maintained at 2.5 to 4 inches in height, depending on the growing season and local conditions. During active summer growth, you can mow at the lower end of this range, but you should raise the cutting height during periods of heat stress or drought to help the grass maintain moisture and reduce stress. Never remove more than one-third of the grass blade height in a single mowing session, as this can shock the grass and weaken its health.
How often should I mow my St Augustine lawn?
During peak growing season, typically late spring through early fall, St Augustine grass typically requires mowing every 5 to 7 days. The exact frequency depends on rainfall, fertilization, and temperature conditions that affect growth rate. In cooler months or during dormancy, mowing may not be necessary at all. Consistent mowing at proper intervals promotes denser turf growth and helps prevent weeds from establishing.
Can I use any fertilizer on St Augustine grass?
Not all fertilizers are appropriate for St Augustine grass, as this species has specific nutritional requirements and can be sensitive to certain herbicide combinations. Products specifically formulated for St Augustine, like the TPS Nutrients options, provide targeted nutrition without harmful additives. The Simple Lawn Solutions 16-4-8 also works well, but be cautious with weed-and-feed products that contain broadleaf herbicides, as some can damage St Augustine grass.
When should I apply atrazine weed control?
For best results, apply atrazine in early spring before weed seeds germinate, typically when soil temperatures reach approximately 55 degrees Fahrenheit. A second application in late spring provides extended control through the primary weed pressure season. Always apply according to label directions, and note that some states have restrictions on atrazine use, so check local regulations before purchasing or applying.
How long does it take to see results from liquid fertilizer?
Liquid fertilizers typically show visible results within 7 to 14 days after application, with full results appearing within three to four weeks. The fast-absorbing formula delivers nutrients directly to the root zone for rapid uptake and response. Initial improvements appear as enhanced green color, followed by increased density and growth vigor as the grass responds to the nutrition.
What is the best time of day to mow St Augustine grass?
Early morning provides ideal mowing conditions, as the grass is dry from morning dew and temperatures remain cool. Late afternoon to early evening also offers suitable conditions, allowing time for grass to recover before nightfall. Avoid mowing during midday heat or when grass is wet from rain or irrigation, as this can damage the turf and create Uneven cuts.
How do I know if my lawn needs fertilization?
Signs that your St Augustine lawn needs fertilization include yellowing or pale color, slow growth despite adequate water, thin or patchy areas, and increased weed competition. A soil test provides the most accurate assessment of nutrient needs, but visual indicators often prompt necessary applications. Regular fertilization every four to six weeks during the growing season maintains optimal health and appearance.
Can I apply fertilizer and herbicide at the same time?
You should not apply fertilizer and herbicide simultaneously, as the herbicide may damage desired grass while targeting weeds. Separate applications by at least three to four weeks, and consider your lawn care calendar carefully. Many homeowners find success with spring herbicide applications followed by fertilizer once the grass actively resumes growth.
Final Verdict
After comprehensive testing and evaluation of all products in this review, the DOVAMAN 13Amp Lawn Mower emerges as my top recommendation for the best lawn mower for St Augustine grass. Its powerful 3500 RPM motor handles the thick growth characteristic of this warm-season grass without stalling, while the excellent clipping collection system reduces cleanup time. The convenient 5-position height adjustment allows precise control for maintaining ideal cutting heights, and the innovative vertical fold storage makes it practical for any garage or shed.
For complete St Augustine grass care, I recommend pairing this mower with the TPS Nutrients 32-ounce or 1-gallon fertilizer depending on your lawn size, along with Southern Ag Atrazine for targeted weed control. This combination addresses all aspects of St Augustine maintenance, from regular mowing to nutrition and weed prevention.
The American Lawn Mower Company push reel mower offers excellent value for those with smaller lawns seeking an eco-friendly alternative, and the Simple Lawn Solutions fertilizer provides versatility for homeowners with mixed grass areas or those preferring a more balanced NPK approach. Each product in this guide has earned its place through practical testing and evaluation, and I am confident these selections will help you achieve the beautiful, healthy St Augustine lawn you desire.
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