Learning how to cut tall grass safely and effectively often requires a specific approach to avoid damaging your mower and achieving an even result. Tackling an overgrown lawn can feel daunting, but with the right preparation and technique, you can restore order without harming your equipment or your back. This guide provides a clear, step-by-step method to handle tall grass, whether you use a standard mower, a brush cutter, or even a scythe.
How To Cut Tall Grass
Before you even start the engine, proper preparation is the most critical step for cutting tall grass. Rushing in can lead to clogged mowers, uneven cuts, and potential safety hazards. Taking time to assess and prepare the area will make the entire process smoother and safer for you and your equipment.
Assess The Lawn And Clear Obstacles
Walk the entire area you plan to cut. Look for hidden objects like rocks, branches, toys, or dog bones that could become dangerous projectiles or damage your mower’s blades. Pay special attention to uneven ground, holes, or dips that could cause you to lose control. Mark any large obstacles with a flag or stick so you can easily avoid them when mowing.
Choose The Right Equipment
Your choice of tool depends on just how tall the grass is. For grass that is moderately tall (6-10 inches), a powerful walk-behind mower with a high-lift blade may suffice. For very tall grass, thick weeds, or a meadow-like area, you will likely need a brush mower, a string trimmer with a blade attachment, or even a sickle bar mower. Using a regular mower on grass that is too tall is a common cause of equipment failure.
Check And Prepare Your Mower
Ensure your mower is in good working order. For a standard lawn mower, this means sharpening the blades. A dull blade will tear the grass, leaving it brown and vulnerable to disease. Check the oil and air filter, and make sure the deck is clean. For the first cut on tall grass, set your mower to its highest possible cutting height. You can always lower it for subsequent passes.
Essential Safety Gear
Never underestimate the safety risks. Wear sturdy, closed-toe shoes with good grip, long pants, and safety glasses to protect your eyes from flying debris. Hearing protection is highly recommended, especially for prolonged use of loud equipment. If you are using a string trimmer or brush cutter, consider wearing chaps for leg protection.
Wait For The Right Conditions
Timing is crucial. Never attempt to cut tall grass when it is wet. Wet grass clumps together, clogs your mower’s deck and discharge chute, and creates an uneven cut. It also makes the ground slippery, increasing the risk of slips and falls. Aim to mow in the late afternoon or on a cool, overcast day to avoid stressing the grass with intense midday sun immediately after cutting.
The Step By Step Cutting Process
With your area prepped and your equipment ready, you can begin the actual cutting process. The key principle here is to take it slow and make multiple passes. Trying to cut tall grass down to a short height in one go is the single biggest mistake you can make.
First Pass The High Cut
Set your mower or brush cutter to its highest setting. Begin mowing in a straight line, overlapping each pass by about a third of the mower’s width to ensure you don’t miss any strips. Move at a slower pace than you would for regular mowing. This allows the mower to process the long material without getting overwhelmed. If the grass is extremely thick, you may need to stop frequently to clear the deck.
Dealing With Clogs And Discharge
If your mower starts to bog down or leave behind large clumps of cut grass, stop immediately. Turn off the engine and wait for all moving parts to come to a complete stop before inspecting or clearing the deck. Using a stick or tool, clear out any packed grass from the discharge chute and under the deck. Consider using the side discharge function instead of bagging or mulching for this first high cut, as it handles volume better.
Second Pass Lowering The Height
After you have completed the first high cut, assess the lawn. The grass should now be at a more manageable height. Change the direction of your mowing pattern for the second pass; if you mowed north-south first, now mow east-west. This helps achieve a more even cut. Lower your mower’s cutting height by one setting, or to your desired final height if it’s not too drastic a change. Make your second pass across the entire area.
Final Pass And Cleanup
For a very neat finish, a third pass may be necessary. This final pass can be done with the mower set at your regular cutting height. You can now engage the mulching function or bagger if you prefer, as the grass clippings will be shorter and less likely to clump. Once finished, rake up any remaining large clumps of grass to prevent them from smothering the lawn underneath. Leaving a thin layer of fine clippings is fine and can act as a natural fertilizer.
Equipment Specific Techniques
Different tools require slight variations in technique. Using the right method for your specific equipment maximizes efficiency and safety.
Using A Standard Rotary Lawn Mower
For a standard mower, the multiple-pass method is non-negotiable. Ensure the engine is running at full throttle before engaging the blades and entering the tall grass. A slower engine speed will lead to more frequent clogging. If your mower has a “high wheel” design, it will be easier to push through resistance. Always mow across slopes, not up and down, to maintain stability.
Using A String Trimmer Or Brush Cutter
For areas where a mower can’t go or for very tough growth, a string trimmer with a metal blade attachment or a dedicated brush cutter is ideal. Use a sweeping motion from side to side, letting the tool’s weight and blade do the workâdon’t force it. Cut in layers, starting at the top of the grass and working your way down. Always keep the blade shield between you and the cutting head.
Using A Riding Mower Or Tractor
Riding mowers can handle tall grass, but caution is increased due to the machine’s power and size. Go even slower than you think you need to. Be extra vigilant for hidden holes or stumps that could cause the tractor to jerk or tip. Consider using a tow-behind brush mower or flail mower attachment for large, very overgrown fields, as they are built for this specific task.
Manual Tools Scythe Or Grass Hook
For a small, eco-friendly option, manual tools like a scythe are surprisingly effective. The technique is rhythmic and relies on a sharp blade and a smooth, swinging motion from the hips, not the arms. It’s excellent for quiet, fuel-free cutting in sensitive areas. A sharp grass hook can be used for smaller patches or for trimming around obstacles after the main mowing is done.
Aftercare For Your Lawn And Equipment
The job isn’t complete once the grass is cut. Proper aftercare ensures your lawn recovers well and your equipment remains ready for next time.
Caring For Your Lawn Post Cutting
After cutting tall grass, your lawn will be stressed. Water it deeply a day or two after mowing if rainfall isn’t sufficient. Avoid fertilizing immediately; wait a week or two to allow the grass to recover. Monitor for signs of disease or pest infestation, as stressed grass is more vulnerable. Reseed any bare patches that become visible after the tall grass is removed.
Cleaning And Maintaining Your Equipment
This is a critical step that many people overlook. Grass clippings, especially when damp, can promote rust and corrosion. After the mower has cooled completely, tip it on its side (with the air filter and carburetor facing up) and thoroughly scrape the caked grass from the underside of the deck. Hose it down if necessary, but let it dry fully before storage. Re-sharpen the blades if they were used extensively. Check for any damage to the blades or deck that may have occured from hidden obstacles.
Disposing Of Grass Clippings
Large volumes of tall grass clippings are not suitable for leaving on the lawn, as they will form a thick thatch mat. You can add them to a compost pile in thin layers mixed with brown materials like leaves or shredded paper. Alternatively, many municipalities accept yard waste for municipal composting. If you have a large property, you might create a dedicated compost area for this material.
Common Mistakes To Avoid
Being aware of common pitfalls can save you time, money, and frustration.
- Cutting too short in one pass: This is the top mistake. It scalps the lawn and kills the mower.
- Mowing wet grass: Leads to clumping, clogging, and an uneven cut.
- Using dull blades: Tears grass blades, turning them brown and inviting disease.
- Ignoring obstacles: A hidden rock can break a blade or window in an instant.
- Skipping safety gear: Debris can cause serious eye or leg injuries.
- Not cleaning the mower deck: Leads to rust, reduced efficiency, and poor cutting performance.
- Forgetting to check oil and air filter: Can cause engine damage during the heavy workload.
Frequently Asked Questions
How Tall Is Too Tall For A Regular Mower?
As a general rule, if the grass is taller than the top of your mower’s wheel, it’s too tall for a single pass. Grass over 6-8 inches often requires the multi-pass technique with a high first cut. If the grass is waist-high or higher, a brush cutter is a safer and more effective choice.
Can I Cut Tall Grass With A Mulching Mower?
You can, but not for the initial high cut. The volume of clippings will overwhelm the mulching system and clog the deck. Use the side discharge for the first pass or two, then you can engage the mulching kit for the final pass when the clippings are short and sparse.
What Is The Best Time Of Year To Cut Overgrown Grass?
Late spring or early summer is often ideal, as the grass is actively growing and can recover quickly. However, you should cut it whenever it becomes a problem. Avoid cutting during a drought or extreme heat, as the added stress could severely damage the grass.
How Do You Prevent Ruts When Mowing Tall Grass?
Ruts are caused by mowing on soft, wet ground. Always wait for the soil to dry out. If you must mow slightly damp ground, use a mower with larger, wider tires to distribute the weight and avoid making deep tracks. A lighter walk-behind mower is better than a heavy riding mower in these conditions.
Should You Rake After Cutting Tall Grass?
Yes, you should rake up the large clumps and mats of cut grass left behind after the first pass. Leaving them will smother the grass underneath, blocking sunlight and air and potentially killing it. A light layer of fine clippings from the final pass is beneficial and does not need to be raked.