Types Of Landscaping Rocks

Landscaping rocks are durable, low-maintenance materials that serve decorative and functional purposes, from mulch alternatives to structural features. Here are 10 common types and how to use them effectively.

Landscape rock

Rock Type Best Use Key Features Pros Cons
Crushed Stone Mulch, dog areas Angular, ~1" size, from quarries Durable, low-maintenance Heats soil, no nutrients
Polished Pebbles Water features, edging Smooth, glossy quartzite stones Decorative, bold contrast Pricey, fades in sun
River Rocks Dry creek beds, drainage Smooth, rounded mix of sizes Natural look, erosion control Heavy, bulk only
Lava Rocks Rock gardens, fire pits Porous, lightweight volcanic rock Retains moisture, affordable Brittle, color limitations
Flagstone Walkways, patios Flat slabs of sandstone/slate Durable, great for foot traffic Installation labor
Cobblestone Driveway edges, accents Rectangular cut granite/basalt Very tough, traditional aesthetic Expensive, uneven for snow
Fieldstone Walls, rustic features Naturally weathered, irregular shapes Inexpensive, local options Heavy, irregular to stack
Boulders Terracing, focal points 12"+, varied types and textures High impact, stabilizing Requires machinery/pro installer

1. Crushed Stone

  • Best for: Mulch, dog-friendly zones
  • Notes: Made from granite or limestone, angular edges
  • Tip: Use around shrubs or drought-tolerant plants

2. Black Polished Pebbles

  • Best for: Water features, patio accents
  • Notes: Tumble-polished for shine, available in bags
  • Tip: Pair with white pebbles for contrast

3. River Rocks

  • Best for: Dry creek beds, drainage paths
  • Notes: Smooth, naturally rounded stones
  • Tip: Use mixed sizes for a natural look

4. Lava Rocks

  • Best for: Fire pits, rock gardens
  • Notes: Lightweight and porous, volcanic origin
  • Tip: Combine red or black tones with succulents

5. Flagstone

  • Best for: Patios, garden paths
  • Notes: Flat, irregular slabs of stone
  • Tip: Lay on a compacted gravel base for stability

6. Cobblestone

  • Best for: Driveway aprons, rustic pathways
  • Notes: Cut stone pavers; traditional style
  • Tip: Use for edging if full driveway cost is too high

7. Fieldstone

  • Best for: Retaining or freestanding walls
  • Notes: Naturally sourced stones with rough edges
  • Tip: Flat stones are easier for dry-stacking

8. Boulders

  • Best for: Terracing, large-scale accents
  • Notes: Heavy and visually dominant
  • Tip: Bury 1/3 of a boulder for a natural appearance

9. Pea Gravel

  • Use: Playgrounds, garden beds, paths
  • Pros: Soft underfoot, affordable
  • Cons: Shifts easily without edging

10. Marble Chips

  • Use: Decorative mulch, bright accents
  • Pros: Reflective, elegant look
  • Cons: Can overheat soil, raises pH

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