It is pretty easy to put down lush green grass on a flat landscape. But if your lawn has hills, mounds, or uneven ground, it can be hard to successfully lay sod. Do not worry; a perfect sloped lawn can be made with some flexible techniques and smart planning.
In this comprehensive guide, I’ll share the best practices for properly laying and securing turf on inclined ground so your project is a success.
Why Slopes Are Challenging for Turf
Several factors make installing and growing turf on slopes more difficult than flat lawns:
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Water runs off quickly – Sloped areas drain faster, making it harder for grass roots to absorb moisture. More frequent watering is needed.
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Erosion – Ground on a slope erodes more easily from rain and irrigation. Good topsoil can wash away.
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Mowing—A lawn with sharp angles is harder to mow so that the grass is evenly spread out. Weed trimmers are often needed for edges.
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Turf that is laid on an angle is more likely to thin over time as the soil and roots move down.
But these problems can be fixed with careful planning and installation, and slopes can support lush, even turf.
Preparing the Slope
Proper grading and base preparation makes or breaks the success of turf on angled ground. Be sure to:
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Loosen and smooth the topsoil to a depth of at least 6 inches for strong rooting.
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Incorporate quality topsoil if needed to enrich the growing base.
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For very steep slopes, install retaining walls, terraces or timber edging for support.
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Add a 2-3 inch base layer of compacted gravel to stabilize the subsurface.
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Cover gravel with a porous landscape fabric to prevent soil loss through the base.
Working Down The Slope
When laying sod pieces, work methodically from the top down to prevent slippage and allow drainage:
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Begin at the highest point and orient turf along the slope (not across).
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Place each row slightly overlapping the previous like shingles on a roof.
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For steep grades, secure all sod edges with long turf staples as you work.
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On slopes greater than 3:1, glue all seams for maximum hold.
Securing the Perimeter
Firmly anchoring the turf around the entire outer perimeter prevents shifting:
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Bury edges in a trench with stakes to brace them.
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Build a sturdy retaining border at the base for support if the incline is very steep.
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Consider commercial slope stabilization mesh products to bolster edges.
Caring for Sloped Turf Post-Install
Once laid, gently rake the new turf and water thoroughly to encourage rooting. Overseed sparse areas and fertilize with a high-nitrogen formula to fuel establishment. Sloped lawns need extra TLC:
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Water more frequently as slopes dry out quicker.
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Replenish washed away topsoil to prevent further erosion.
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Watch for signs of thinning and reseed bare patches promptly.
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Plan to mow perpendicular to the slope to avoid scalping with the mower deck.
With the proper installation approach and some extra care, even dramatically sloped yards can grow a flawless expanse of lush, beautiful turf. The incline just requires a bit more planning and patience. Seek help laying and securing sod on steeper sections for best results. Then get ready to enjoy your scenic sloped lawn for years to come!
FAQs About Laying Turf on Slopes
How steep can a lawn be for turf?
Turf can be installed on slopes up to about a 3:1 grade (a 1 foot rise over 3 feet horizontally). Steeper than that and additional retention and stabilization is needed.
What direction should you lay sod on a hill?
Lay turf pieces lengthwise along the slope, not across. This prevents slippage. Work in horizontal rows top to bottom.
How do you prevent erosion on a sloped lawn?
Use quality topsoil, avoid over-watering, maintain thick turf, and install silt fences or straw bales on steep slopes to control erosion.
Should you stake sod on a slope?
Yes, sod on any incline over 10 degrees should be staked or stapled during install to prevent slippage. Steep slopes and sod seams always need extra anchoring.
How often should I water new sod on a slope?
New turf needs very frequent watering, up to 3-4 times daily on hot, sunny slopes. Water until the soil beneath is moist to a 3 inch depth. Reduce once the turf roots securely.
Growing gorgeous turf on angled terrain just takes some know-how and extra care. But the payoff of a lush, rolling lawn is well worth the effort. Follow these tips for successfully installing and maintaining turf on sloped areas for a lawn you’ll love.
Specification of Sods
- The sod that will be put down on the slopes will be made up of thick, well-rooted growths of long-lasting, desirable grasses.
- The sod must be native to the area where it will be used.
- The sods should be mostly free of weeds and other unwanted things.
- While the sod is being cut, the grass on it must be at least 50 mm long.
- Cut the sods into mats that are all the same width and shape, at least 250 mm x 300 mm.
- As much of the sod’s thickness as possible should be the same, and 50 to 80 mm of soil should cover the base so that all the grass’s dense roots stay in the sod strip.
- When it’s wet, the sod needs to dry enough so that it doesn’t move around when it’s being handled.
- When it’s dry outside, the sod needs to be watered before it can be lifted to keep it alive and stop the soil from falling off during transport.
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