Mowing wet grass may seem like no big deal, but it can actually lead to a number of problems. Here are some key reasons why mowing wet grass is not recommended.
Poor Cutting Quality
Wet grass tends to clump together, which makes it difficult for the mower blades to get a clean, even cut. Mowing over wet clumps of grass can create an uneven lawn with ragged edges and missed patches. The clippings are also more likely to clump up on the lawn or clog the mower deck. This poor cutting quality creates an unsightly lawn and extra cleanup work.
Damaged Lawn and Soil Compaction
Mowing over saturated ground puts a lot of stress and pressure on the lawn and soil underneath. The weight of the mower on wet ground causes the soil to become compacted. Compacted soil prevents air, water and nutrients from getting to the grass roots properly. This can lead to thinner and weaker grass over time. Wet mowing also rips grass blades rather than making a clean cut, damaging the health and appearance of the lawn.
Rust and Dull Mower Blades
Mowing wet grass allows moisture to stick to the underside of the mower deck and coat the blades. This moisture promotes rust and corrosion buildup on mower blades. It also leads to a sticky residue on the blades that attracts even more wet clippings and debris. This cycle causes blades to become dull and less effective much faster. Dull blades make the cutting problems mentioned above even worse.
Messy Mower Cleanup
Wet grass clippings tend to stick and clump on mower decks and blades. This sticky buildup is a hassle to remove after mowing. Dried clippings on a mower deck also become a magnet for more debris and rust to accumulate. The extra time spent cleaning also delays being able to put the mower back into storage.
Safety Hazards
Mowing on wet turf with poor traction increases the risk of mower tires slipping and sliding. This can make it difficult to control the mower, especially on slopes or hills. Wet grass can also clog chutes and stick to shoes, creating a slipping hazard for the operator when walking behind the mower. The potential for injuries from falls or losing control of equipment is higher.
Mold and Mildew Growth
Wet clippings left in a mower deck or grass catcher provide an ideal environment for mold, mildew and bacteria to grow. This creates potential health hazards for anyone who handles or empties the grass catcher. The spread of fungal diseases in the lawn is also more likely if using a mower with lingering wet clippings.
Engine Problems
Getting excessive moisture on mower engines can cause a number of issues, including misfires, loss of power and corrosion buildup. Mowing in wet conditions increases the potential for electrical shorts and damaged ignition systems. This moisture exposure places unnecessary strain on the engine and components.
Avoiding Wet Grass Mowing
When possible, allow grass to fully dry before mowing, even if that means waiting a couple days for dry weather. Mow in the late morning or early afternoon when dew has had time to evaporate. Adjusting mower heights up a notch can also help when grass is slightly damp. Make sure to thoroughly clean under the mower deck after any wet mowing sessions. Taking a little extra time to mow carefully in dry conditions will create a healthier, better looking lawn.
Frequently Asked Questions
What are the key reasons not to mow wet grass?
The main reasons are poor cutting quality, lawn and soil damage, rusty blades, messy cleanup, safety issues, mold growth, and engine problems. Mowing wet grass essentially creates a lose-lose situation.
Does mowing wet grass damage the lawn?
Yes, mowing wet grass can damage the lawn. The extra weight of the mower compacts the soaked ground and rips the grass rather than cutting it cleanly. This leads to weaker grass and thin spots over time.
Should you mow the lawn after rain?
It’s best to wait at least a full day after rain or heavy watering to allow the lawn to fully dry out. Mowing wet grass right after rain leads to clumping, poor cutting quality, and higher potential for lawn damage.
Can you mow damp grass?
Damp grass that is not completely soaked can sometimes be mowed carefully without too much issue. Raising the cutting height slightly can help for damp conditions. But fully wet, saturated grass should always be avoided.
How long should you wait to mow after rain?
Ideally, wait 1-2 days after heavy rain or watering to allow the lawn to dry fully before mowing. For very light showers, waiting overnight may provide enough drying time in some cases. Use best judgment based on weather and lawn conditions.
Is morning or afternoon better for mowing wet grass?
Mowing later in the afternoon allows more time for dew to evaporate and the lawn to dry compared to early morning when conditions tend to be wetter. But it’s still best to wait until the next day or two for complete drying.
Conclusion
Mowing wet grass may seem harmless, but it can lead to a number of issues that damage your lawn and create headaches. Grass needs ample time to dry out after rain or irrigation before mowing. Whenever possible, wait until the lawn is completely dry before mowing, even if it means delaying a day or two. Taking a little extra time to mow in ideal dry conditions will create a healthier, better looking lawn and make the mowing process easier and more effective. Following proper timing and lawn care best practices will help avoid the pitfalls of mowing wet grass.