How to Install Decorative Landscape Rock the Right Way (Step-by-Step Utah Guide)

Installing decorative landscape rock takes five steps: kill and clear the existing vegetation, grade and compact the soil, lay quality landscape fabric with overlapped seams, spread rock 2–3 inches deep, and contain it with solid edging. Done in that order over Utah’s clay soils, a decorative landscape rock bed stays clean and weed-free for a decade or more. Kilgore Landscape Center in West Jordan supplies the rock, fabric, and honest advice — usually in one visit.

By September, the Salt Lake Valley’s summer of hauling hoses has convinced another wave of homeowners: that struggling strip of grass is becoming a rock bed. Smart move — but the difference between a decorative landscape rock installation that looks sharp for fifteen years and one that’s growing weeds by June is entirely in the prep work nobody sees. Here’s the full method, tuned for West Jordan’s heavy clay.

Before You Start: Choose Your Rock and Do the Math

If you haven’t picked your stone yet, start with our buyer’s guide to decorative landscape rocks and the color-matching guide — or skip straight to walking the piles in our decorative rock collection at the West Jordan yard, where the new Santa Fe Chip is drawing crowds.

Quantity math is simple: at the standard 2–3" depth, one ton of decorative landscape rock covers roughly 60–100 square feet (full formulas in our material calculator guide). Measure before you shop; order about 10% extra.

Step 1: Clear the Ground Completely

Whatever currently grows in the area must go — not just mowed, gone.

• Grass: cut it out with a sod cutter (rentable) or strip it with a flat shovel, roots included
• Weeds: pull or treat, then wait a week and get the second flush — Utah’s morning glory (field bindweed) laughs at single treatments and will find any gap in your fabric later
• Roots and debris: rake the area down to clean soil

This step is 60% of the labor and 90% of the long-term result. A decorative landscape rock bed laid over living bindweed is a subscription to frustration.

Step 2: Grade and Compact

Shape the soil to its final contours, sloping about 2% away from foundations so water sheds outward. Then compact it — walk it down thoroughly or run a hand tamper over it. West Jordan’s clay actually helps here: compacted clay makes a firm, stable platform that keeps rock from migrating downward.

Drop the finished grade about 3 inches below adjacent sidewalks and driveways, so your rock sits flush with the hard surfaces instead of spilling over them.

Step 3: Lay Landscape Fabric Like You Mean It

Fabric is the difference-maker in any decorative landscape rock installation, and USU Extension’s guidance on inorganic mulches is blunt about why: rock over bare soil slowly sinks in and invites weeds up; rock over a proper barrier stays separated and clean.

The professional method:

1. Use quality woven fabric, not the tissue-thin bargain rolls that tear during spreading
2. Overlap seams 4–6 inches — gaps between strips are weed highways
3. Run fabric up edges and trim after the rock is placed, not before
4. Cut an X for each plant, fold the flaps in tight around the stem
5. Pin everything with landscape staples every few feet and at every seam

Step 4: Spread the Rock

Wheelbarrow loads in, dump in piles, rake to depth:

• 2 inches over fabric for most decorative landscape rock beds
• 3 inches in windy exposures or unfenced front yards
• Deeper isn’t better — extra depth buries your budget without improving the bed

Spread with the back of a bow rake for a smooth, even finish. If your delivery lands on the driveway, lay a tarp down first — cleanup becomes a five-minute fold instead of an hour with a push broom.

Step 5: Edge It or Chase It Forever

Uncontained rock migrates — into grass, onto sidewalks, down slopes. Solid edging finishes the installation:

• Steel edging: the crisp, modern standard; disappears visually
• Paver or stone borders: decorative in their own right
• Natural stone: one-man boulders make organic containment (and a nice size reference from our boulder size guide)
• Concrete curbing: the permanent, zero-maintenance option

Utah-Specific Wisdom for Rock Beds

Fall is prime installation season. September and October’s mild temperatures make the labor pleasant, and a bed finished now emerges from winter pristine while seeded weeds die in the dark under your fabric.

Water-wise rebates may apply. If your decorative landscape rock replaces functioning lawn, Utah Water Savers’ grass-removal rebate programs cover much of Salt Lake County — check qualification before you strip the sod, because pre-approval is usually required.

Leave breathing room at trees. Keep rock a few inches back from trunks; piling any mulch against bark invites problems.

Frequently Asked Questions

What do you put under decorative landscape rock? Quality woven landscape fabric over cleared, compacted, graded soil. The fabric stops rock from sinking into Utah clay and blocks weeds from rooting upward.

How deep should decorative landscape rock be? Two inches over fabric is standard; three inches in windy or high-traffic areas. One ton covers about 60–100 square feet in that range.

Do I need to remove grass before laying landscape rock? Yes — completely, roots included. Grass smothered under fabric dies, but its decomposing layer creates soft spots, and any survivors (especially bindweed) will find seams.

When is the best time to install landscape rock in Utah? Fall. Mild working weather, a winter of weed-free settling, and a finished bed by the first warm week of spring.

Can Kilgore Landscape Center help me plan my rock installation? That’s the job. Bring your measurements to our West Jordan yard — we’ll help you choose the rock, calculate tonnage, add fabric and staples, and schedule delivery in one stop.

One Trip, Everything You Need

The best installations start with a conversation, not a checkout cart. Visit Kilgore Landscape Center in West Jordan, Utah to pick your decorative landscape rock in person — Santa Fe Chip included — or call us to talk through your project, confirm tonnage, and schedule pickup or delivery anywhere in Salt Lake County.

Sources

1. Utah State University Extension — Using Mulches in Utah Landscapes and Gardens: extension.usu.edu (PDF)
2. Utah Water Savers / Conserve Water Utah — Grass Removal Rebates: conservewater.utah.gov/grass-removal-rebates