How to pick rock, DG and boulders for a desert yard, how much to order, and what wind, monsoon storms and caliche mean for the plan.
Get a Free Rockscape EstimateLandscape rock covers beds and bare ground, decomposed granite makes walkable paths and patios, and boulders give a rock yard shape and height. Most beds get 2 to 3 inches of rock, and most rock weighs about 1.3 to 1.5 tons per cubic yard. In the High Desert, plan the drainage, the base and the edging first, because wind and monsoon storms move loose material that is not held in place.
This hub links every page in our rock and DG series. Start with the type of material you are considering, or jump to the calculator if you already know.
| Material | What it is | Best for | Watch out for |
|---|---|---|---|
| Decorative rock and gravel | Crushed or tumbled stone, usually 3/8 inch to 3 inches | Planting beds, side yards, borders, dry creek beds | Weeds that root in dust on top; small pieces scatter onto paths |
| Decomposed granite (DG) | Granite broken down to 1/4 inch and smaller (Landscaping Network) | Paths, patios, seating areas, low-water yards | Loose DG erodes and tracks indoors; stabilized DG holds better |
| Boulders | Single large stones, sold by the ton | Focal points, slopes, edges, natural-looking groupings | Weight; a 3 foot granite boulder can top a ton |
| Rip rap | Large angular rock for slopes and channels | Erosion control in washes and steep banks | Not for walking on; sized by engineers on bigger jobs |
Our rock types guide breaks down colors and sizes, and the DG guide covers loose, stabilized and resin-bound options.
Crushed, gold, brown, white, lava, river rock and rip rap, with a comparison table and how to pick a color for a desert house.
What DG is, loose vs stabilized vs resin, where it works and where it turns into a mess.
How binders turn loose DG into a firm path, and what the install spec looks like.
Step by step: layout, base, edging, lifts and compaction, plus the mistakes that ruin paths.
Cubic yards and tons for any shape, coverage charts, and a boulder weight calculator.
Boulder weight chart, how to place them so they look natural, and moving them safely.
Paw comfort, heat, drainage and cleanup compared for dog runs and yards.
Which rock to use near water, buffers that keep it out of the pool, and drainage.
Square feet x depth in inches / 12 / 27 = cubic yards. Multiply cubic yards by about 1.35 to 1.45 for tons, depending on the material (Earth Stone Rock). One cubic yard covers roughly 160 square feet at 2 inches and 110 at 3 inches (Majestic Rock & Material).
The rock and gravel calculator handles multiple areas, circles and triangles, and adds a little extra for compaction.
Professionally installed rockscape in our area runs about $3 to $6 per square foot. Where you land depends on how much grading and base work the yard needs, the rock you pick, edging, and how far the material has to travel from the truck. Boulders, dry creek beds and DG paths with stabilizer add to it.
For full breakdowns see our cost guides, or look at what we build on the rockscape design page.
Rock lasts and does not blow away as easily as bark. It also runs hotter. K-State Research and Extension notes rock mulch adds to heat and raises soil temperature (K-State). A two-year Phoenix study found soil under two organic mulches generally stayed cooler during the day than soil under DG or bare soil (Arboriculture & Urban Forestry).
What that means in practice: rock is great for open ground, borders and paths. Right around the roots of plants that like it cooler, an organic mulch ring can be the better call. Mojave Water Agency counts either one, recommending a 2 to 3 inch mulch layer “such as rock, bark, gravel, wood chips, or compost” (MWA).
Fabric keeps rock from sinking into the soil and blocks weeds coming up from below. It does not stop seeds that land on top. K-State points out that wind blows fine soil and weed seed into gravel, so weeds root above the fabric, and that fabric can restrict water and air and shows once it degrades (K-State).
If you use it, pick a woven or non-woven fabric that lets water through, overlap the seams, and keep enough rock on top to hide it. Then keep the bed clean. Our weeds in rock and gravel guide covers pre-emergent timing for the High Desert.
Local pages: Hesperia, Victorville, Apple Valley, Adelanto, Barstow, Riverside and Menifee rockscape.
It depends on the program. In parts of the Inland Empire served by SoCal Water$mart, turf replacement projects need a 3 inch ring of organic mulch around plants, and “mulch, rock or decomposed granite” must cover any other bare spaces, with no bare soil allowed (SoCal Water$mart). We could not confirm a current turf or rock rebate from the High Desert water districts. Our water rebates guide tracks what is open.
Most decorative rock beds get 2 to 3 inches. Mojave Water Agency recommends a 2 to 3 inch mulch layer that can be rock, and stabilized DG paths usually go 3 inches compacted over a base.
For paths and patios, DG packs down into a firm walking surface, while gravel stays loose underfoot. For beds and drainage, gravel or larger rock moves water better and tracks indoors less. Many yards use both.
It can. K-State Research and Extension notes rock mulch adds to heat and raises soil temperature, and a Phoenix study found soil under organic mulch stayed cooler than under DG. Lighter rock and shade near the house help.
Fabric helps keep rock from sinking and blocks weeds from below, but seeds that blow in can still root on top of it. Use a fabric that lets water through, keep enough rock on top to cover it, and plan on some weed control.
Professionally installed rockscape in the High Desert and Inland Empire runs about $3 to $6 per square foot, depending on grading, base work, the rock, edging and access.
We checked every number on this page against the public sources below. If a rule or date changes, the agency page is the final word.
We plan the grading, base and edging first, then the rock. Free on-site estimate anywhere in the High Desert and Inland Empire.
Get a Free Rockscape EstimateOr call (760) 792-7627
