Want a secret weapon in the fight against weeds that doesn’t involve spraying herbicides all summer long?
Grab your gloves and head to the garage.
The machine that’s being used to mow your lawn and how it’s adjusted plays a massive role in weed prevention. Turf professionals know this and that’s why high-end landscaping mowers aren’t just built fast – they’re precision engineered when set up right.
They choke weeds out by eliminating sun exposure.
Nothing else you’ll throw at your lawn cuts down on weed pressure like proper mowing. If you want a thick lawn that’s naturally weed resistant, you have to understand this relationship.
Investing in the right Exmark mowing equipment means your operators have the cutting precision and consistency they need from professional landscaping mowers to build a thicker stand of turf that naturally prevents weeds season after season.
Let’s dig into why…
The Dirt: Your Lawn Mowing Playbook
- Why The Right Mowing Equipment Influences Weed Control
- Cutting Height: The Simple Trick to Fewer Weeds
- Why Blade Sharpness Matters More Than You Think
- Mulching vs. Bagging: What’s Best for Weed Control?
- Buying Guide: Professional Landscaping Mowers
Why Does Mowing Equipment Influence Weed Control?
Think your lawn mower isn’t a big deal.
Think again.
How you mow your lawn each week is effectively deciding how much weed pressure you’ll face that season. Cut too low and you risk thinning out the turf. Thin turf leads to bare spots which leads to sunlight shining directly on weed seeds.
Sunlight = weeds.
The opposite is true as well…
When you maintain a thick, dense stand of turf by mowing at the proper height, you create a canopy right over the soil. This prevents weed seeds from receiving the sunlight they need to germinate. Think about a forest ecosystem – the thicker the trees, the less vegetation you’ll find underneath.
That’s why professional landscaping mowers matter so much.
Trimming your lawn with equipment that offers inconsistent cutting heights, has dull blades, or even mowing in the wrong pattern can all sabotage your turf. Fix these issues and you’re no longer just “sprucing up the lawn” – you’re changing the biology of your landscape.
Cutting Height: The Simple Trick to Avoiding Weeds
One quick fact most homeowners aren’t aware of…
Mowing your lawn short doesn’t make for a better lawn. It actually increases your chances of developing more weeds.
Researchers at Michigan State University confirm that lawns mowed at 3.5 to 4 inches create a thicker turf with deep roots and fewer weeds. When grass is taller, it shades the ground keeping soil temperatures low and preventing weed seeds from germinating.
Taller grass also encourages deeper rooting. The deeper the roots, the more your turf can stand up to drought and heat stress. Heat and drought = thin spots.
And weeds thrive on thin spots.
Keep these heights in mind:
- Cool-season grasses (think tall fescue or Kentucky bluegrass) – mow at 3.5 to 4 inches
- Warm-season grasses (think bermudagrass or zoysiagrass) – mow at 1 to 2 inches
- Don’t cut more than 1/3 of the grass blade at a time
Never cut more than one-third of the grass blade when you mow. Cutting too much off at once drains the grass blade of nutrients and weakens your turf.
High-end professional landscaping mowers give you precise control over your cutting height so you can easily maintain the same height every time you cut.
Why Blade Sharpness Matters More Than You Think
The number one mower maintenance item that’s overlooked?
It’s simple – blade sharpness.
Mower blades that aren’t sharp tear the grass instead of cutting it. When grass is torn, it creates ragged wounds taking several days to heal instead of 24-48 hours. Torn grass turns brown, is more susceptible to disease, and gives weeds a chance to move in.
Cut grass correctly and your turf can beat out weed growth every single time.
Sharp mower blades should be serviced every 20-25 hours of use. If you only mow your lawn a few times a season, sharpen once or twice a year. Operators who use professional landscaping mowers for business should sharpen weekly. That might sound extreme, but over 75% of lawn care professionals agree it’s necessary to maintain a quality cut.
Mulching vs. Bagging: What’s Best For Weed Control?
There’s one other factor that figures into lawn mower equipment and its relation to weeds.
How you handle clippings.
If you’re mowing during a heavy weed-seed period, which is when most weeds are flowering and producing seeds, bag your clippings. This eliminates spreading weed seeds all over your property.
At all other times, you can leave your clippings on the lawn. Here’s why:
- They contain nutrients that will return to the soil as they decompose
- You could potentially cut your nitrogen input rate by 50% if you consistently return clippings to the lawn
- Professional landscaping mowers that mulch clippings finely won’t leave you with clumpy grass pieces
Commercial landscaping mowers with mulching decks make this process easy. No extra work passing over the same spot. Your mower handles it all for you.
Buying Guide: Professional Landscaping Mowers
If you own your own lawn care business, you’ve felt the mower wars first hand. Should you buy John Deere, Honda, Kawasaki, Viking?
How about renting the expense instead of purchasing equipment that doesn’t meet your needs?
Here’s what to look for in a professional landscaping mower:
- Accurate cutting heights – you can’t prevent weeds if you’re cutting too low
- Sharp cutting blades – weak grass means weeds will run your lawn
- Level deck performance – stay away from dips and divots in the mower deck
- Mulching – always choose a mower that can mulch
Choosing between renting vs. purchasing commercial landscaping mowers depends on how often you plan on using the equipment. Talk to your local equipment dealer about rental programs – you might be surprised at what they can offer.
The Bottom Line: Build A Lawn That Can Fight Off Weeds
Every component of your mower should be focused on building a healthier lawn.
Turf that can fight off weeds naturally through proper mowing height, thicker grass roots and less exposure to direct sunlight. Cutting your grass correctly isn’t just about a tidy lawn – it’s about creating a sustainable solution to killing weeds once and for all.
Here’s the takeaway…
- Cut your grass taller – 3.5 to 4 inches for cool-season grasses
- Follow the one-third rule when determining how much to cut
- Keep your blades sharp – cut grass should heal within 48 hours
- Manage your clippings based on seasonal weed pressure
- Purchase a professional landscaping mower that can do it all
Give weeds fewer opportunities to thrive and they’ll eventually go away.
Until next time…stay sharp!
