South Utah TurfTurf, rock & pavers (435) 660-6207

Rock guideChoosing landscape rock colors and sizes in St. George

The swatch set on this page shows 29 rock colors, in sizes from 3/8 inch gravel up to 4 to 10 inch stones. Lay at least 2 inches if the rock is part of a district rebate conversion2. One cubic yard covers 324 square feet an inch deep, or 162 square feet at 2 inches4.

Last updated · Reviewed by Tate Strickland

Projects are built by True Landscaping & Construction, LLC (dba True Turf). South Utah Turf is an advertising and referral service, not a contractor. How this works

What colors and sizes are in the swatch set?

These names and sizes come from True Turf's rock swatch photos. There are 29 color names. Five of them come in four sizes each: Autumn Red, Calico, Cherry Chocolate, Frozen Yogurt and Peaches & Cream. Some names are crushed, angular rock and some are rounded cobble. Ask True Turf what's in stock before you settle on one, and see decorative rock installs for how it goes in.

Rock colors and sizes in the swatch photos
ColorSizes in the photosWhat the photo shows
All Seasons1 inchCrushed rust, gray and tan pieces
Autumn Red3/8, 1/2, 1, and 2 to 4 inchCrushed red and rust tones
Big Bold Beautiful2 to 4 and 4 to 10 inchRounded gray, tan and dark stones
Blue Grey Cobble3/4 inchSmall rounded gray pebbles
Blue Grey Crushed1 inchCrushed blue-gray rock
Brown Crushed1 inchCrushed tan and brown rock
Calico3/8, 1/2, 1, and 2 to 4 inchCrushed mix of cream, tan, rust and gray
California Gold1 inchCrushed gold and tan rock
Cherry Chocolate3/8, 1/2, 1, and 2 to 4 inchCrushed dark gray and maroon-brown
Cinnamon Spice1, and 2 to 4 inchRounded tan, rust and orange stones
Frozen Yogurt3/8, 1/2, 1, and 2 to 4 inchCrushed pink, rust and cream
Magic Mountain1 inchCrushed gold, gray and charcoal mix
Mountain Blend1/2 and 1 inchMixed gray, tan and white pieces
Mountain Blend Cobble1 1/2 to 2 1/2, and 2 to 4 inchRounded gray, white and tan cobble
Multi White1 inchRounded white, gray and tan pebbles
Paradise1/2 inchSmall crushed red and rust pieces
Pea Gravel3/8 inchSmall rounded gray and tan pebbles
Peaches & Cream3/8, 1/2, 1, and 2 to 4 inchCrushed peach-orange and cream
Picasso1 inchCrushed gray and charcoal with light flecks
Shadow Brown1 inchCrushed brown-gray rock
Snow Canyon1 inchCrushed tan, cream and gray
Sunburst River Rock2 to 4 inchRounded and blocky tan, cream and gray stones
Tan Grey1 inchCrushed gray and tan
Tan Red Cobble1 to 3 inchRounded tan and red cobble
Utah Gold1/2 and 1 inchCrushed gold-tan rock
White Grey Crushed1 inchCrushed light gray rock
White Marble1 1/2 inchCrushed white and pale gray
White Pink1 1/2 inchRounded white, pink and tan stones
White Pink Cobble3/4 inchSmall rounded pink and tan pebbles

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How do you narrow down a color?

Start with the rules, then the look. If you live in an HOA, check its rules first. Utah law lets an HOA restrict mulches it considers detrimental and require design review. It just can't ban water wise landscaping on a detached lot1. Bring two or three swatch picks to the HOA before you order anything. After that, match the rock to your house, your pavers and the red rock around you.

  • Crushed rock and rounded cobble look different even in the same tones, and the photos show both.
  • Blends like Calico, Mountain Blend and Magic Mountain mix several colors in one photo.
  • Small sizes like 3/8 inch Pea Gravel read as an even texture, while 4 to 10 inch Big Bold Beautiful reads as single stones.

How deep should landscape rock be?

For a district rebate conversion, the ground needs at least 2 inches of mulch, and rock counts2. The state program used in Cedar City and Enoch asks for 2 to 4 inches of permeable gravel, rock or bark where there are no pavers3. Clemson Extension says even a 1 inch layer of small rocks gives good weed control4.

Rock by itself doesn't earn a rebate. The district pays only when living plants cover 50% of the converted area at maturity and run on drip2; see the full rebate rules. Check eligibility with the district before you start; pre-approval is required. See desert landscaping for plant and drip layouts.

How much rock do you need?

Use the extension formula: square feet times depth in inches, divided by 324, gives cubic yards. That works because one cubic yard covers 324 square feet at 1 inch deep4. The table runs common sizes. Order a little extra for uneven ground, and ask for the coverage rate of the exact rock you pick.

Cubic yards of rock needed: square feet times inches, divided by 324
Area2 inches deep3 inches deep4 inches deep
100 sq ft0.60.91.2
250 sq ft1.52.33.1
500 sq ft3.14.66.2
1,000 sq ft6.29.312.3

Do you need a weed barrier under rock?

Not always. The water district says weed barriers are generally only recommended where weeds are stubborn, and a few inches of mulch usually suppresses weeds. In a rebate conversion, any barrier must be permeable, like fabric or mesh, and plastic or other impermeable barriers are prohibited52.

Hurricane is stricter for required landscape areas: its code calls for porous landscape fabric under decomposed granite, gravel, crushed rock and bark chips6. Check your own city's code; see landscaping rules in Hurricane.

Does rock make a yard hotter?

It can. Clemson Extension notes that gravel, pebbles and crushed stone reflect solar radiation and can create a very hot landscape in summer4. The water district says shade keeps areas up to 25 degrees cooler and urges water-efficient trees5. Pair rock with shade trees and plants on drip, especially next to patios and walls that get afternoon sun.

Clemson also says to keep rock away from acid-loving plants, since rock may add alkaline minerals to the soil4. For more on summer surface heat, see turf and summer heat.

How we checked this

The color names and sizes come from True Turf's rock swatch photos, named as in the original files, and the descriptions say what each photo shows. Depth rules come from the water district's program agreement and the state program details23. Coverage math comes from Clemson Cooperative Extension's mulch fact sheet4. Weed barrier rules come from the district FAQ and Hurricane's 2024 landscaping ordinance56. We checked every source on October 21, 2026.

Colors and sizes

Southern Utah landscape rock, by color and size

Close ups of each rock in the supplier's bins, from True Turf's product list. Rock looks different wet, dry, and in full sun, so ask to see it in person before you choose.

  • 1 inch All Seasons landscape rock, close upAll Seasons1 inch
  • 3/8 inch Autumn Red landscape rock, close upAutumn Red3/8 inch
  • 1/2 inch Autumn Red landscape rock, close upAutumn Red1/2 inch
  • 1 inch Autumn Red landscape rock, close upAutumn Red1 inch
  • 2 to 4 inch Autumn Red landscape rock, close upAutumn Red2 to 4 inch
  • 2 to 4 inch Big Bold Beautiful landscape rock, close upBig Bold Beautiful2 to 4 inch
  • 4 to 10 inch Big Bold Beautiful landscape rock, close upBig Bold Beautiful4 to 10 inch
  • 3/4 inch Blue Grey Cobble landscape rock, close upBlue Grey Cobble3/4 inch
  • 1 inch Blue Grey Crushed landscape rock, close upBlue Grey Crushed1 inch
  • 1 inch Brown Crushed landscape rock, close upBrown Crushed1 inch
  • 3/8 inch Calico landscape rock, close upCalico3/8 inch
  • 1/2 inch Calico landscape rock, close upCalico1/2 inch
  • 1 inch Calico landscape rock, close upCalico1 inch
  • 2 to 4 inch Calico landscape rock, close upCalico2 to 4 inch
  • 1 inch California Gold landscape rock, close upCalifornia Gold1 inch
  • 3/8 inch Cherry Chocolate landscape rock, close upCherry Chocolate3/8 inch
  • 1/2 inch Cherry Chocolate landscape rock, close upCherry Chocolate1/2 inch
  • 1 inch Cherry Chocolate landscape rock, close upCherry Chocolate1 inch
  • 2 to 4 inch Cherry Chocolate landscape rock, close upCherry Chocolate2 to 4 inch
  • 1 inch Cinnamon Spice landscape rock, close upCinnamon Spice1 inch
  • 2 to 4 inch Cinnamon Spice landscape rock, close upCinnamon Spice2 to 4 inch
  • 3/8 inch Frozen Yogurt landscape rock, close upFrozen Yogurt3/8 inch
  • 1/2 inch Frozen Yogurt landscape rock, close upFrozen Yogurt1/2 inch
  • 1 inch Frozen Yogurt landscape rock, close upFrozen Yogurt1 inch
  • 2 to 4 inch Frozen Yogurt landscape rock, close upFrozen Yogurt2 to 4 inch
  • 1 inch Magic Mountain landscape rock, close upMagic Mountain1 inch
  • 1/2 inch Mountain Blend landscape rock, close upMountain Blend1/2 inch
  • 1 inch Mountain Blend landscape rock, close upMountain Blend1 inch
  • 1.5 to 2.5 inch Mountain Blend Cobble landscape rock, close upMountain Blend Cobble1.5 to 2.5 inch
  • 2 to 4 inch Mountain Blend Cobble landscape rock, close upMountain Blend Cobble2 to 4 inch
  • 1 inch Multi White landscape rock, close upMulti White1 inch
  • 1/2 inch Paradise landscape rock, close upParadise1/2 inch
  • 3/8 inch Pea Gravel landscape rock, close upPea Gravel3/8 inch
  • 3/8 inch Peaches Cream landscape rock, close upPeaches Cream3/8 inch
  • 1/2 inch Peaches Cream landscape rock, close upPeaches Cream1/2 inch
  • 1 inch Peaches Cream landscape rock, close upPeaches Cream1 inch
  • 2 to 4 inch Peaches Cream landscape rock, close upPeaches Cream2 to 4 inch
  • 1 inch Picasso landscape rock, close upPicasso1 inch
  • 1 inch Shadow Brown landscape rock, close upShadow Brown1 inch
  • 1 inch Snow Canyon landscape rock, close upSnow Canyon1 inch
  • 2 to 4 inch Sunburst River Rock landscape rock, close upSunburst River Rock2 to 4 inch
  • 1 inch Tan Grey landscape rock, close upTan Grey1 inch
  • 1 to 3 inch Tan Red Cobble landscape rock, close upTan Red Cobble1 to 3 inch
  • 1/2 inch Utah Gold landscape rock, close upUtah Gold1/2 inch
  • 1 inch Utah Gold landscape rock, close upUtah Gold1 inch
  • 1 inch White Grey Crushed landscape rock, close upWhite Grey Crushed1 inch
  • 1.5 inch White Marble landscape rock, close upWhite Marble1.5 inch
  • 1.5 inch White Pink landscape rock, close upWhite Pink1.5 inch
  • 3/4 inch White Pink Cobble landscape rock, close upWhite Pink Cobble3/4 inch

Good to know

Questions people ask

Still wondering? Call (435) 660-6207 and ask True Turf.

How deep should rock be for the Washington County rebate?

At least 2 inches. The district's agreement says the ground must be covered by at least 2 inches of mulch, such as rock, bark, ungrouted stepping stones or pavers, or permeable turf2. Rock alone doesn't qualify, because living plants must still cover 50% of the converted area at maturity, on drip. Check eligibility with the district before you start; pre-approval is required.

How many cubic yards do I need for a 600 square foot bed at 3 inches?

About 5.6 cubic yards. Multiply 600 by 3 and divide by 324, which comes to 5.56, using Clemson Extension's formula4. Round up a little for low spots, and confirm the coverage rate for the exact rock you choose. At 2 inches deep, the same bed takes about 3.7 cubic yards.

Which colors come in the most sizes?

Five of them. Autumn Red, Calico, Cherry Chocolate, Frozen Yogurt and Peaches & Cream each appear in 3/8 inch, 1/2 inch, 1 inch and 2 to 4 inch sizes in the swatch set. That lets you carry one color across a yard in both fine and coarse sizes. Ask True Turf what's in stock before you plan around one.

Can I put plastic under landscape rock?

Not in a rebate conversion. The district prohibits impermeable weed barriers, and it says impermeable materials harm soil and plant health anywhere roots are expected to grow25. If you want a barrier, use a permeable fabric or mesh. In most cases, the district says, a few inches of mulch keeps weeds down on its own5.

Next step

Pick your rock with the installer

Projects start at $3,000. Call or send the form, and True Turf calls you back within 30 minutes during business hours.

Call the installer(435) 660-6207

Projects are built by True Landscaping & Construction, LLC (dba True Turf). South Utah Turf is an advertising and referral service, not a contractor. How this works

Sources and checked dates

  1. Utah Code 57-8a-231: Water wise landscaping le.utah.gov, checked October 2026
  2. Washington County Water Conservancy District: Water Efficient Landscape Program Agreement wcwcd.gov, checked October 2026
  3. Utah Water Savers: Division of Water Resources Landscape Incentive Program details utahwatersavers.com, checked October 2026
  4. Clemson Cooperative Extension, Home & Garden Information Center: Mulch (HGIC 1604) hgic.clemson.edu, checked October 2026
  5. Washington County Water Conservancy District: Water Efficient Landscape Program and FAQ wcwcd.gov, checked October 2026
  6. Hurricane City Ordinance 2024-02, amending Title 10, Chapter 32, Landscaping and Water Efficiency Standards (signed copy posted by WCWCD, PDF) wcwcd.gov, checked October 2026
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