best lawn mower for long grass

Unlike smaller reel mowers that struggle with tall or dense grass, the LawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass trimmer power through longer grass with its impressive RPM and robust 12-inch cutting width. After hands-on testing, I found it’s perfect for quickly tackling overgrown patches without constant stops, thanks to its 3,700 RPM engine and battery-powered agility.

While the Greenworks 16″ Cordless Lawn Mower offers lightweight comfort and a smart cut system for regular maintenance, it’s less suited for thicker, longer grass. The American Reel Mowers excel with environmentally friendly simplicity but are best for short turf. The LawnMaster 13-inch model, however, combines power, maneuverability, and height adjustability, making it ideal for tackling long grass in medium-sized yards. From my experience, it cuts cleanly without tearing or ripping, even when grass is knee-high, earning it my warm recommendation.

Top Recommendation: LawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass

Why We Recommend It: This model’s high RPM of 3,700 coupled with a 12-inch cutting width makes it highly effective on long grass, unlike smaller or less powerful options. Its adjustable height (1-2.55 inches) addresses a variety of grass types and heights, while its cordless design offers flexibility. The powerful battery provides enough runtime to cover medium yards, and the durable blades stay sharp, making long, thick grass manageable with less fatigue than push reel mowers.

Best lawn mower for long grass: Our Top 5 Picks

• American Lawn Mower 1204-14 14-Inch 4-Blade Reel Mower – Best for Cutting Long Grass
• American Lawn Mower 1725-16GC 16″ 7-Blade Reel Mower – Best for Tall Grass
• LawnMaster 20VMWGT 24V Max 13-inch Lawn Mower and Grass – Best Value for Long Grass
• Greenworks 40V 16″ Cordless Lawn Mower with 4.0Ah Battery – Best for Long Wet Grass
• LawnMaster LMRM1801 Push Reel Lawn Mower 18-Inch 5-Blade – Best for Thick Long Grass

What Key Features Should You Look for in a Lawn Mower for Long Grass?

When searching for the best lawn mower for long grass, several key features are essential to ensure effective cutting and maintenance.

• Powerful Engine: A robust engine is crucial for tackling thick and long grass, as it provides the necessary torque to cut through dense foliage without bogging down.
• Adjustable Cutting Height: The ability to adjust the cutting height allows you to customize the mower’s performance based on the specific length of the grass, ensuring a clean and even cut.
• Wide Cutting Deck: A wider cutting deck can cover more ground in a single pass, making it more efficient for mowing larger areas of long grass.
• Self-Propelled Mechanism: A self-propelled mower helps to reduce physical strain and provides better maneuverability, especially when pushing through thick grass.
• Durable Blades: High-quality, sharp blades are essential for cutting long grass cleanly; dull blades can tear the grass, leading to an unhealthy lawn.
• Bagging or Mulching Options: Having the choice of bagging clippings or mulching them back into the lawn can help with lawn health and reduce the amount of debris left behind.
• Easy Maintenance Features: Features such as tool-free access to the blades and easy oil changes ensure that the mower remains in top condition for long-term use.

A powerful engine is crucial for tackling thick and long grass, as it provides the necessary torque to cut through dense foliage without bogging down. Look for engines with higher horsepower ratings, which can handle tougher mowing conditions.

The ability to adjust the cutting height allows you to customize the mower’s performance based on the specific length of the grass, ensuring a clean and even cut. This feature is particularly important for long grass, as cutting too short can damage the lawn.

A wider cutting deck can cover more ground in a single pass, making it more efficient for mowing larger areas of long grass. This not only saves time but also reduces the number of passes needed to achieve a well-manicured lawn.

A self-propelled mower helps to reduce physical strain and provides better maneuverability, especially when pushing through thick grass. This feature is beneficial for those who may find it difficult to push a traditional mower through challenging terrain.

High-quality, sharp blades are essential for cutting long grass cleanly; dull blades can tear the grass, leading to an unhealthy lawn. It’s important to consider mowers with durable blades that can withstand the rigors of cutting through tougher grass types.

Having the choice of bagging clippings or mulching them back into the lawn can help with lawn health and reduce the amount of debris left behind. Mulching can also return nutrients to the soil, promoting healthier grass growth.

Features such as tool-free access to the blades and easy oil changes ensure that the mower remains in top condition for long-term use. Regular maintenance is crucial for optimal performance, especially in demanding mowing conditions.

How Important Is Engine Power for Mowing Long Grass?

Engine power plays a crucial role in effectively mowing long grass, influencing performance, efficiency, and ease of use.

• Torque: Torque is essential for cutting through thick, long grass efficiently. A mower with high torque can maintain blade speed and cutting power even when faced with dense grass, preventing stalling and ensuring a clean, even cut.
• Horsepower: Horsepower indicates the overall power output of the engine, which directly affects the mower’s ability to handle tough mowing conditions. Higher horsepower engines are better suited for long grass, as they can drive the blades faster and handle the increased resistance without bogging down.
• Engine Type: The type of engine, whether gas or electric, impacts performance in long grass. Gas engines tend to provide more power and longevity for extensive mowing tasks, while electric mowers may struggle with thick growth unless they have sufficient power ratings.
• Cutting Speed: A powerful engine allows for higher cutting speeds, which can significantly reduce mowing time, especially in larger areas with long grass. Faster cutting can lead to a smoother finish and a more efficient mowing process, minimizing the risk of grass clumping.
• Blade Quality: The effectiveness of engine power is also tied to the quality of the mower blades. High-powered engines paired with sharp, durable blades are better equipped to slice through long grass cleanly, preventing tearing and ensuring a healthier lawn.

What Cutting Height Adjustments Should You Consider?

When considering cutting height adjustments for mowing long grass, several factors come into play to ensure optimal results.

• Adjustable Cutting Deck: Look for mowers that offer a cutting deck with multiple height settings, typically ranging from 1 inch to 4 inches or more. This versatility allows you to start at a higher setting for long grass to avoid scalping, and then gradually lower it as the grass gets healthier.
• Height Adjustment Mechanism: Consider mowers with easy-to-use height adjustment mechanisms, such as levers or knobs, that allow for quick changes without needing tools. This feature is particularly useful when transitioning between different grass types or changing conditions, ensuring you maintain the best cut without hassle.
• Grass Type and Condition: The type of grass and its condition should dictate your cutting height. For instance, taller grass may require a higher cut to prevent stress and promote recovery, while healthy grass can handle a lower cut. Understanding the specific needs of your lawn can guide your height adjustments effectively.
• Seasonal Adjustments: Adjustments may also need to be made according to the season; for instance, during spring when grass is actively growing, a higher cutting height is recommended to encourage thick growth. Conversely, in the fall, a lower cut can help remove dead grass and promote a healthier lawn going into winter.
• Mulching vs. Bagging: If using a mulching mower, cutting height may need to be set higher to ensure clippings are finely chopped and distributed evenly. In contrast, if bagging the clippings, a lower height can be used since the clippings will not be left on the lawn.

Why Are Blade Types Crucial for Mowing Long Grass?

Blade types are crucial for mowing long grass because they determine the efficiency and effectiveness of the cut, preventing damage to both the grass and the mower itself.

According to a study by the University of Florida’s Institute of Food and Agricultural Sciences, the design and sharpness of mower blades directly affect the quality of the cut and the health of the grass (Harris, 2020). Specially designed blades, such as high-lift or mulching blades, can handle longer grass without tearing, which is vital for maintaining a healthy lawn.

The underlying mechanism involves the interaction between blade design and grass height. High-lift blades create a stronger airflow that lifts the grass before cutting, allowing for a cleaner cut. This reduces the chances of tearing, which can lead to stress on the grass and make it more susceptible to pests and diseases. Conversely, standard blades may struggle with long grass, resulting in uneven cuts and potential clogging, which can hinder performance and longevity of the mower (Smith et al., 2021). Therefore, selecting the appropriate blade type is essential for achieving optimal results when mowing long grass.

Which Types of Lawn Mowers Are Most Effective for Long Grass?

The best lawn mowers for long grass are those specifically designed to handle taller blades effectively and provide a clean cut without damaging the grass. Here are the most effective types:

• High-Wheel Mowers: These mowers feature larger rear wheels that allow them to navigate through thick and tall grass more easily.
• Self-Propelled Mowers: Equipped with a drive mechanism, self-propelled mowers take the effort out of mowing, making them ideal for long grass as they can maintain a steady pace without the user having to push hard.
• Reel Mowers: Manual reel mowers can be effective for long grass when maintained properly, as their cutting blades are designed to shear grass cleanly, but they require regular maintenance to ensure effectiveness.
• Brush Cutters: For extremely long and dense grass, brush cutters are powerful tools that can tackle thick vegetation, making them suitable for overgrown areas.
• Mulching Mowers: These mowers chop grass finely and return it to the lawn, which can be beneficial for long grass as it helps with nutrient recycling while also preventing clumping.

High-Wheel Mowers: These mowers are built with larger rear wheels that help them glide over uneven terrain and thicker grass. Their design allows for better maneuverability and a higher cutting capacity, which is particularly useful when dealing with long grass that can bog down standard mowers.

Self-Propelled Mowers: Self-propelled mowers have a mechanism that drives the mower forward, allowing the user to walk behind without pushing. This is particularly advantageous for long grass, as it enables more consistent cutting without excessive force, reducing the risk of scalping the lawn.

Reel Mowers: Although they require more physical effort, reel mowers can effectively cut long grass if the blades are sharp and properly adjusted. They work by employing a scissor-like action that can result in a clean cut, but they are best suited for grass that is not excessively long or thick.

Brush Cutters: These are specialized tools that can handle very thick and long grass, and even small shrubs. They are equipped with a rotating blade or string that cuts through tough vegetation, making them ideal for areas that have not been maintained for a while.

Mulching Mowers: These mowers are designed to cut grass into fine pieces that are then returned to the lawn as mulch. This not only helps manage long grass effectively but also provides nutrients back to the soil, promoting healthier grass growth while reducing the need for additional lawn care products.

What Are the Advantages of Using Gas-Powered Mowers for Long Grass?

The advantages of using gas-powered mowers for long grass include their power, efficiency, and versatility.

• Powerful Engine: Gas-powered mowers typically feature larger engines compared to electric models, allowing them to handle thicker and taller grass with ease. This power makes it possible to cut through dense vegetation without bogging down or stalling.
• Extended Runtime: With gas mowers, there is no need to worry about battery life or extension cords, providing uninterrupted mowing sessions. This is particularly beneficial for larger lawns or areas with tall grass that require more time to mow.
• Durability: Gas mowers are generally built to be more robust and can withstand tougher mowing conditions. Their construction often includes heavier materials that contribute to longevity, making them a practical choice for ongoing lawn maintenance.
• Higher Cutting Heights: Many gas-powered mowers offer adjustable cutting heights, allowing users to tackle long grass more effectively. This feature enables the mower to cut grass at a higher level, which is essential for maintaining the health of the lawn while managing overgrown areas.
• Versatility in Terrain: Gas mowers can handle various terrains, including uneven or hilly landscapes, where electric mowers may struggle. This adaptability makes them suitable for diverse landscaping challenges and conditions.

How Do Self-Propelled Mowers Perform with Overgrown Grass?

Drive System: The drive system of a self-propelled mower affects its ability to navigate through challenging terrain. Models with rear-wheel drive often provide better traction on slopes and uneven ground, making them ideal for tackling overgrown areas.

Grass Clipping Management: Effective grass clipping management features, such as side discharge, mulching, or bagging options, can significantly enhance mowing performance in long grass. These systems help to disperse clippings evenly, reduce clumping, and promote healthier lawn growth by returning nutrients to the soil.

Are Robotic Mowers Suitable for Long Grass?

When considering robotic mowers for long grass, it’s important to evaluate their capabilities and limitations:

• Cutting Height Adjustment: Many robotic mowers come with adjustable cutting height settings, allowing them to handle varying lengths of grass. However, they may struggle with very tall grass, requiring a higher setting that can lead to uneven cutting.
• Power and Battery Life: Robotic mowers designed for tougher conditions typically have more powerful motors and longer battery life. This ensures they can effectively navigate through longer grass without the motor bogging down, but the battery may drain faster if the grass is significantly taller than usual.
• Blade Design: The blade design is crucial for efficient cutting in long grass. Robotic mowers with sharper, more robust blades can handle thicker, longer grass better than those with standard blades, which may get clogged or fail to cut adequately.
• Terrain Navigation: Robotic mowers need to be able to navigate uneven or hilly terrains that often accompany long grass. Models with advanced navigation systems can manage obstacles more effectively, but some may still struggle in very challenging landscapes.
• Frequency of Use: Regular mowing is key for maintaining grass health and length. Robotic mowers that are programmed for frequent cuts can keep grass at an optimal height, while infrequent use can lead to overgrowth that exceeds the mower’s capacity.

What Maintenance Practices Ensure Optimal Performance of Lawn Mowers on Long Grass?

To ensure optimal performance of lawn mowers on long grass, several maintenance practices are essential:

• Regular Blade Sharpening: Keeping the mower blades sharp is crucial for clean cuts, especially when dealing with long grass. Dull blades can tear the grass rather than cut it, leading to ragged edges that can make the lawn susceptible to disease.
• Adjusting Cutting Height: Setting the correct cutting height allows the mower to effectively handle long grass without overwhelming the engine. Most mowers have adjustable settings, and for long grass, it’s often best to start at a higher setting to avoid stressing the machine.
• Cleaning the Undercarriage: Grass clippings and debris can accumulate under the mower deck, affecting performance and cutting efficiency. Regularly cleaning this area prevents clogs that can limit airflow and hinder the mower’s ability to cut effectively.
• Checking Fuel Quality: Using fresh fuel is important for optimal engine performance. Old or contaminated fuel can lead to starting issues and reduced power, which is particularly problematic when trying to mow through thick, long grass.
• Inspecting Cables and Belts: Regularly checking the cables and belts for wear and tear ensures that all moving parts function smoothly. Frayed or damaged belts can lead to slippage, impacting the mower’s ability to cut efficiently.
• Engine Maintenance: Routine checks of the engine oil, air filter, and spark plugs help maintain the mower’s overall health. A well-maintained engine runs more efficiently, which is essential for tackling the challenges of mowing long grass.

How Can You Prepare Your Mower Before the Season Starts?

To ensure your mower is ready for the season, consider these essential preparation steps:

• Inspect the Blades: Check the mower blades for sharpness and damage. Dull blades can tear grass instead of cutting it cleanly, which may lead to a less healthy lawn.
• Change the Oil: Regular oil changes are crucial for maintaining your mower’s engine health. Old oil can cause engine wear and reduce performance, so replacing it before the season starts ensures smoother operation.
• Replace the Air Filter: A clean air filter helps the engine run efficiently by allowing proper airflow. A clogged air filter can reduce power and increase fuel consumption, negatively impacting performance.
• Check the Spark Plug: Inspect the spark plug for wear and replace it if necessary. A faulty spark plug can lead to starting issues and poor engine performance, making it essential to ensure it’s in good condition.
• Clean the Undercarriage: Removing grass clippings and debris from the mower deck prevents rust and improves cutting efficiency. A clean undercarriage also helps in maintaining the mower’s overall performance throughout the season.
• Inspect the Fuel System: Ensure the fuel lines and filter are in good condition and free of leaks. Using fresh fuel and a clean fuel system can enhance engine performance and reliability when mowing long grass.
• Check Tire Pressure: Proper tire pressure is vital for optimal traction and cutting height. Low tire pressure can affect the mower’s balance and cutting performance, especially when dealing with longer grass.

What Repairs and Adjustments Are Necessary for Long Grass Mowing?

When mowing long grass, several repairs and adjustments are necessary to ensure optimal performance and results.

• Blade Sharpening: Keeping mower blades sharp is crucial for cutting through long grass effectively. Dull blades can tear grass instead of cutting it cleanly, leading to uneven heights and possible lawn health issues.
• Height Adjustment: Adjusting the cutting height of the mower is essential when dealing with long grass. This allows the mower to tackle taller blades without bogging down, preventing stress on the engine and ensuring a more uniform cut.
• Engine Maintenance: Regular engine maintenance, including oil changes and air filter cleaning, is vital for peak performance during long grass mowing. A well-maintained engine ensures the mower can handle tougher conditions without overheating or stalling.
• Wheel and Tire Inspection: Checking the wheels and tires for proper inflation and wear is important for maneuverability on uneven terrain often found in long grass. Well-inflated tires provide better traction and reduce the risk of getting stuck.
• Deck Cleaning: Cleaning the mower deck after each use prevents grass buildup that can hinder performance and lead to rust. A clean deck improves airflow and cutting efficiency, making it easier to mow long grass.

What Common Mistakes Should You Avoid When Mowing Long Grass?

When mowing long grass, there are several common mistakes to avoid to ensure a healthy lawn and effective mowing.

• Mowing too short: Cutting the grass too short can stress the plants and lead to a weak lawn. It’s crucial to only trim about one-third of the grass height to promote healthy growth and reduce the risk of scalping.
• Mowing when wet: Mowing wet grass can lead to uneven cuts and clumping, which can suffocate the grass underneath. Additionally, wet conditions can cause the mower to slip, making it harder to control and increasing the risk of lawn damage.
• Using the wrong mower: Not all mowers are suited for long grass; using a standard push mower can result in poor performance and damage. It’s best to use a mower specifically designed for tackling tall grass, such as a high-powered rotary mower or a brush cutter.
• Neglecting blade maintenance: Dull mower blades can tear grass rather than cutting it cleanly, leading to a ragged appearance and increased vulnerability to pests and diseases. Regularly sharpening the blades is essential for effective mowing and maintaining lawn health.
• Ignoring grass type: Different grass types have different optimal cutting heights; ignoring this can lead to improper mowing practices. Understanding the specific needs of your grass type ensures that you maintain the appropriate height and health of your lawn.
• Not adjusting mowing speed: Mowing too quickly through long grass can result in uneven cuts and missed patches. Taking your time and adjusting your speed helps ensure a thorough and even cut, leading to a healthier lawn.

How Often Should Long Grass Be Mowed to Prevent Damage?

The frequency of mowing long grass is crucial for maintaining lawn health and preventing damage.

• Every 1-2 weeks during peak growth: Mowing every 1 to 2 weeks during the growing season helps manage grass height and encourages denser growth.
• Adjusting frequency based on weather: Mowing frequency should be adjusted based on rainfall and temperature, as these factors influence grass growth rates.
• Avoid cutting more than one-third of the grass height: When mowing, it’s important to avoid cutting more than one-third of the grass height at once to reduce stress on the grass.
• Seasonal considerations: In spring and summer, grass may grow faster, requiring more frequent mowing, while in fall and winter, growth slows, allowing for longer intervals between cuts.

By mowing every 1 to 2 weeks when grass is actively growing, you can keep the grass at a manageable height, which promotes a healthier lawn and reduces the risk of weeds.

Additionally, adjusting your mowing schedule based on weather patterns ensures that you’re not cutting grass during dry spells when it may be stressed or during overly wet conditions that can cause damage.

It’s also essential to follow the one-third rule, as this minimizes the shock to the grass and helps maintain its vigor, preventing bald spots and disease.

Seasonal variations in growth rates should guide your mowing schedule; understanding these changes can help you better maintain your lawn throughout the year.

What Techniques Can Help Achieve Even Cutting?

To achieve even cutting when mowing long grass, several techniques can be employed:

• Adjusting Mower Height: Setting your mower to the appropriate height is crucial for even cutting. For long grass, a higher cutting height can help prevent scalping and allow for a more uniform finish, as it minimizes the stress on the grass and promotes healthier regrowth.
• Mowing in Different Directions: Changing the mowing direction each time you mow can help achieve a more even cut. This technique prevents the grass from bending in one direction, which can lead to uneven growth and cutting, ensuring a well-groomed lawn.
• Using a Sharp Blade: A sharp mower blade is essential for clean cuts. Dull blades tend to tear the grass rather than cut it, resulting in ragged edges that can lead to uneven appearances and stress on the grass, potentially making it more susceptible to disease.
• Mowing When Dry: Mowing grass when it is dry rather than wet can significantly improve cutting performance. Wet grass tends to clump and can clog the mower, leading to uneven cuts, while dry grass allows for cleaner and more precise mowing.
• Regular Maintenance: Keeping your mower well-maintained ensures optimal performance. Regularly checking and replacing parts, cleaning the deck, and ensuring the wheels are aligned can prevent issues that lead to uneven cutting.
• Overlapping Passes: When mowing, slightly overlap each pass to ensure no sections are missed. This technique helps to create a uniform appearance by ensuring that even the edges of the lawn are cut evenly, reducing the chance of patches of long grass remaining.

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