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Grass lawns occasionallymust be overseededto strengthen root systems and crowd out weeds.
Slit-seeding is an effectivemethod of aeratingand overseeding a lawn.
But it isn’t for every lawn and can damage some lawns.
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Read on to hear what lawn and turf experts say about the benefitsand potential dangersof slit-seeding a lawn.
Meet the Expert
What Is Slit-Seeding?
A slit-seeding machine is about the size of a large lawn mower.
Vertical discs about 1-inch apart groove the turf.
A hopper holds the grass seed and dispenses it behind the discs.
How Slit-Seeding Is Done
Slit-seeding a medium-sized lawn can be done in a day or two.
The job requires an overseeding (or slit-seeding) machine, a mower, and a rake.
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Better-protected seeds can fully germinate and produce a healthier yield.
While not always recommended, it ispossibleto slit-seed pre-existing grass, Handley says.
These precautions reduce the chance of ripping out or damaging an existing lawn.
DIY vs.
Pro Slit-Seeding
While professional slit-seeding is usually recommended, slit-seeding is within the reach of many DIYers.
Many rental yards rent overseeding machines for around $100 per day or $375 per week.
Homeowners should take extra time to learn how to use the machine.
Start slit-seeding in a remote location because of the potential for lawn damage.
Cool-season grass includes varieties likeKentucky bluegrass, perennial ryegrass, and fescues.
“This timing allows new grass to establish roots before the winter months.”
Feldman reminds homeowners that successful seed germination and establishment depend onproper wateringand fertilization.
Renovating a lawn for quality and sustainability.
University of Minnesota Extension.
