Landscape rock falls into three broad families: decorative stone (river rock, beach pebbles, lava rock), crushed rock (decomposed granite, crushed granite, basalt, limestone), and gravel (pea gravel, drainage gravel, driveway gravel, base rock). The right one comes down to four things: the project, whether water needs to drain through it, the color you want, and how deep you install it. Unlike bark mulch that breaks down every year, most landscape rock lasts a decade or more with almost no upkeep. This guide walks through every major type so you can pick with confidence and know roughly how much to buy.
Decorative landscape rock
Decorative rock is chosen mostly for looks, though it still suppresses weeds and helps with erosion. It tends to be rounded or polished, which gives a softer, more natural feel than angular crushed stone. Browse the full range in our landscape rock collection.
River rock
River rock is naturally tumbled stone with smooth, rounded edges. It comes in a mix of tan, gray, brown, white, and sometimes reddish tones, in sizes from about half an inch to 5 inches and up. The gaps between stones drain well, so it is a go-to for dry creek beds, French drain covers, garden borders, and the area around downspouts. Larger river rock (3 to 5 inches) holds slopes for erosion control, while smaller sizes work as ground cover in planting beds. The smooth surface is also kinder underfoot than sharp gravel where kids and pets play. See the sizes and colors in our river rock collection.
Mexican beach pebbles
Mexican beach pebbles are a premium decorative stone with a smooth, almost polished surface, tumbled by ocean waves into flat oval shapes that nest tightly together. They come in deep black, charcoal, and mixed earth tones, roughly 1 to 5 inches. Because they pack so closely, drainage is moderate, so they suit decorative beds, Zen gardens, water feature surrounds, and accent borders more than heavy-flow areas. They cost more per ton than river rock and cover less area because of their flat profile, but the look is hard to match. Shop our Mexican beach pebbles, or read beach pebbles vs river rock if you are deciding between the two.
Polished pebbles
Polished pebbles are machine-tumbled to a uniform, glossy finish you will not find in naturally weathered stone. They run from about half an inch to 2 inches in white, black, mixed, and specialty colors, and they shine when wet. Use them in container gardens, small accent areas, and water feature and fountain bases, where you can appreciate them up close. Drainage is moderate, so keep them in contained, low-traffic spots. Browse our polished pebbles.
Black lava rock
Black lava rock is a lightweight volcanic stone with a rough, porous texture and deep charcoal-to-black color. The air pockets make it roughly 40 to 50 percent lighter per cubic yard than dense stone, so it covers more area per ton, which is a real cost advantage on big jobs. It drains well, holds heat around plants in cool-night regions, and looks at home in modern xeriscape beds and around fire pits. The trade-off is the rough surface, which can snag gloves and bare feet, so it is not the best pick for pathways or play areas. Shop our lava rock collection for black and red lava rock and cinders in bulk.
Crushed landscape rock
Crushed rock is mechanically broken stone with angular edges that interlock when compacted. That makes it the right choice for surfaces that need to stay put: paths, driveways, and base layers under pavers. The angular shape is the whole point. It locks together under pressure and resists shifting.
Decomposed granite
Decomposed granite, or DG, is naturally weathered granite broken down into fine, sand-like particles. It is the most popular landscaping rock in California and the Southwest, valued for its natural look, strong compaction, and permeability. It comes in gold, tan, brown, gray, red, and black depending on the quarry. At 2 to 3 inches deep it packs into a firm, walkable surface that still passes water, which is ideal for pathways, patios, dog runs, and low-water ground cover. For driveways and high-traffic areas, mixing in a stabilizer resists rutting and erosion. Start with our decomposed granite collection, and for the full background see what is decomposed granite and the best decomposed granite for pathways.
Crushed granite
Crushed granite is quarried and mechanically broken, so it has coarser, sharper edges than DG. Those edges lock together tightly under compaction, giving one of the most stable surfaces in landscape rock. It is common for driveways, parking areas, commercial walkways, and as a base under pavers and flagstone. Colors range from gray and blue-gray to warm gold. It handles vehicle traffic better than DG, while DG feels softer for barefoot walking. You will find crushed granite alongside other angular stone in our landscape gravel collection.
Crushed basalt
Crushed basalt is a dense, dark volcanic rock that compacts exceptionally well and is one of the hardest landscape rocks available, harder than granite or limestone. That hardness means it resists breaking down under heavy traffic, so it is excellent for driveways, commercial walkways, and durable base layers. The deep charcoal-to-black color also gives a striking modern look. It costs a little more than crushed granite but lasts longer in high-traffic use. Browse dark crushed stone in our landscape gravel collection.
Crushed limestone
Crushed limestone is a lighter crushed rock, from white to pale gray with cream undertones. It compacts well and is widely used for driveways, pathways, drainage bases, and sub-base under concrete. It is naturally alkaline, which can help neutralize overly acidic garden beds. It is one of the more affordable crushed options, but it is softer than granite or basalt and can wear faster in heavy rain or acidic soil. In dry climates it performs well, and its light color reflects heat instead of absorbing it. See comparable material in our landscape gravel collection.
Gravel types for landscaping
Gravel covers a broad range of stone that differs in size, shape, and purpose. Matching the type to the job matters: the wrong gravel can lead to drainage problems, an unstable surface, or wasted money.
Pea gravel
Pea gravel is small, rounded stone, usually a quarter to half an inch. It is comfortable underfoot, affordable, and easy to spread, which makes it popular for patios, garden paths, playgrounds, dog runs, and fill around stepping stones. The catch is that round stone does not compact, so it shifts underfoot and migrates without edging. If you want a firmer walking surface, decomposed granite is the better call. Shop our pea gravel collection.
Drainage gravel
Drainage gravel, sometimes called drain rock, is a three-quarter to one-and-a-half-inch angular stone built for water management. The gaps between angular pieces create consistent channels that let water flow without clogging. Use it in French drains, behind retaining walls, and under downspout extensions, where it is usually buried or covered. For a visible feature like a dry creek bed, river rock moves water well and looks better. Find drain rock in our landscape gravel collection, and see how to build a dry creek bed.
Driveway gravel
Driveway gravel is typically crushed angular stone in the three-quarter to one-and-a-half-inch range that compacts under vehicle weight into a stable driving surface. Round pea gravel should never go on a driveway. It displaces under tires and creates ruts within weeks. A good gravel driveway is layered: 4 to 6 inches of larger base rock on the bottom, then 2 to 3 inches of finer crushed stone on top. Crushed granite and basalt are the usual picks because they resist breaking down under tire pressure. Browse driveway-grade stone in our landscape gravel collection, and read the best gravel for a driveway.
Base rock
Base rock, also called road base or Class II base, is an engineered mix of crushed rock and fines that compacts into an extremely stable foundation layer. It sits under pavers, concrete slabs, retaining walls, and artificial turf, providing the level footing that prevents settling. It is purely functional and always covered by a finish material. Most projects need 4 to 6 inches compacted, and skimping on it is one of the most common DIY mistakes. Shop our base and ground materials.
Best landscape rock by project
Here is how the pieces fit together once you know what you are building.
- Pathways. Decomposed granite for a firm, natural surface, or pea gravel for a looser, casual feel. Add a stabilizer to DG for a more permanent path.
- Driveways. Crushed granite or basalt over a base rock foundation. Stabilized DG is an elegant alternative. Avoid round pea gravel.
- Drainage. Angular drain rock for buried French drains, river rock for visible features like dry creek beds. In heavy runoff, combine a buried drain layer with a river rock surface.
- Rock gardens. Layer sizes: boulders as focal points, 3 to 6 inch river rock for variety, and DG or small crushed granite as filler around plantings. For slopes and erosion control, large stone or rip rap holds best.
- Modern landscapes. Beach pebbles, black lava rock, and crushed basalt give the clean, dark contrast that defines contemporary design.
Landscape rock size guide
Size affects both how a bed looks and how it functions. Smaller stones give tighter coverage and better weed suppression. Larger stones add texture but leave gaps where weeds can emerge, so landscape fabric underneath becomes essential.
| Size | Typical use | Drainage | Depth needed |
|---|---|---|---|
| 1/4 inch | Pea gravel paths, paver joints, decorative fill | Moderate | 2 to 3 inches |
| 1/2 inch | Garden beds, ground cover, container top dressing | Moderate | 2 to 3 inches |
| 1 to 2 inch | Walkways, dry creek beds, borders | Good | 2 to 3 inches |
| 3 to 5 inch | Erosion control, rock gardens, accents | Excellent | 3 to 4 inches |
| 6 inch and up | Retaining features, focal boulders, slope work | Excellent | Single layer |
A useful rule: install rock at 1.5 to 2 times the stone diameter for full coverage. A 1-inch stone needs 2 to 3 inches of depth; a 3-inch stone needs 3 to 4 inches. Too shallow leaves bare spots, too deep wastes material. For more on matching size to the job, see landscape rock sizes explained.
Landscape rock color guide
Color sets the tone for the whole space. Contrast with your home's exterior for visual pop, or stay in complementary tones for a blended, natural feel.
- Gold and tan. California Gold DG, Mojave Gold, and tan river rock give a warm look that suits Mediterranean, Spanish, and Southwest styles and pairs well with drought-tolerant plants like lavender and sage.
- Gray. Crushed granite, river rock, and basalt in gray are neutral and versatile, a clean backdrop that lets plantings take center stage.
- Black. Black landscape rock, lava rock, basalt, and Mexican beach pebbles make a bold, contemporary statement against green foliage and light stucco. Note that black rock absorbs heat, so use it in shaded areas or as accents in hot climates.
- Red. Red lava rock, red DG, and red river rock add warm color to desert and xeriscape designs. Use it sparingly for impact.
Heat matters too: dark rock can run noticeably warmer than surrounding soil on hot days, while light rock reflects heat and keeps soil cooler. For a deeper walkthrough, read how to choose landscape rock color, and for low-water designs see drought-tolerant landscaping with rock.
Installation tips
Good installation is the difference between a bed that looks sharp for years and one that grows weeds and bare spots within months.
- Depth. Most decorative rock goes 2 to 3 inches deep. Paths and patios want about 3 inches; driveways need 4 to 6 inches over compacted base. Order 5 to 10 percent extra for settling and uneven ground.
- Weed fabric. Lay commercial-grade landscape fabric under all decorative rock, pin it every 12 inches, and overlap seams by at least 6 inches. Skip cheap plastic sheeting, which blocks drainage and fails within a year.
- Edging. Metal, plastic, or stone edging keeps rock from spreading into lawns and beds, which matters most for loose pea gravel and small DG. Steel edging is the cleanest and most durable.
- Drainage. Slope the ground away from structures, at least 1 inch of drop per 8 feet. In heavy clay, add a 2 to 3 inch drain rock layer beneath the surface material.
- Soil prep. Clear weeds, grass, and debris, then compact the bare soil. Skipping prep is the top reason DIY installs fail in the first year.
How much rock you need
Quantity depends on the area and the install depth. As a rough guide, one ton of rock covers about 80 to 100 square feet at 3 inches deep, or roughly 120 square feet at 2 inches, though this varies with material density. Rather than guessing and risking a second delivery, enter your length, width, and depth in our coverage calculator for an exact figure in tons and cubic yards. For more on the math, see how much landscape rock do I need and cubic yards vs tons.
Frequently asked questions
What is the best rock for landscaping?
It depends on the project. Decomposed granite is the most versatile choice for pathways, patios, and ground cover. River rock works well for decorative beds and drainage features. For driveways, crushed granite or basalt gives the best stability. Mexican beach pebbles are ideal for modern, high-end designs.
How deep should landscape rock be installed?
Most decorative landscape rock should go 2 to 3 inches deep for adequate coverage and weed suppression. Pathways and patios typically need 3 inches. Driveways require 4 to 6 inches of compacted material over a solid base layer. Always install landscape fabric beneath the rock to limit weed growth.
What is the difference between decomposed granite and gravel?
Decomposed granite is finely weathered granite that compacts into a firm, walkable surface similar to packed dirt. Gravel is larger, individual stones that stay loose and shift underfoot. DG is better for pathways and patios where you want a smooth surface, while gravel is better for drainage and areas where permeability is the priority.
Is landscape rock better than mulch?
Landscape rock lasts much longer than mulch. Organic mulch breaks down within 1 to 2 years and needs replacing, while rock can last 10 years or more with minimal upkeep. Rock also does not wash away in heavy rain or need seasonal refreshing. Mulch is still the better choice where you want to enrich the soil as it decomposes.
How much landscape rock do I need per square foot?
At a standard 3-inch depth, one ton of landscape rock covers roughly 80 to 100 square feet, depending on the material density. At 2 inches, one ton covers about 120 to 140 square feet. Use our coverage calculator for an exact estimate based on your dimensions and chosen material.
Get the materials
Once you have settled on a type, browse the full landscape rock collection or the specific collection for your pick, like decomposed granite, river rock, or pea gravel. Run your numbers through the coverage calculator, order samples to check color in your own light before you commit, and request a quote for bulk or large orders. If you want to see how delivery works, read how landscape rock is delivered. We deliver nationwide from our California yards.