Black Shredded Mulch vs River Rock
Side-by-side comparison of Black Shredded Mulch and River Rock to help you choose the right gravel for your project.
Overview
Shredded hardwood mulch dyed black for a bold, modern landscape look. Rich black color makes green plants and colorful flowers stand out. Holds its color longer than brown mulch and provides the same moisture retention, weed suppression, and soil temperature regulation benefits.
Naturally rounded stones smoothed by water erosion. Available in sizes from 1 to 5+ inches. River rock adds a polished, natural look to any landscape and is prized for its smooth texture and visual appeal.
Common Uses
Black Shredded Mulch
- ✓ Landscape beds
- ✓ Tree rings
- ✓ Garden borders
- ✓ Foundation plantings
- ✓ Commercial landscaping
- ✓ Contrast beds
River Rock
- ✓ Landscaping
- ✓ Dry creek beds
- ✓ Drainage
- ✓ Decorative borders
- ✓ Erosion control
- ✓ Pond and water features
Pros & Cons
Black Shredded Mulch
- + Bold black color creates striking contrast with plants
- + Holds color longer than natural brown mulch
- + Retains soil moisture reducing watering
- + Suppresses weed growth naturally
- + Insulates soil temperature
- − Dye can temporarily stain hands, concrete, and clothing
- − Needs replenishing every 1-2 years as it decomposes
- − Can attract termites if placed against structures
- − Fades to dark gray over time
- − Slightly more expensive than undyed mulch
River Rock
- + Beautiful, natural appearance
- + Extremely durable and long-lasting
- + Heavy enough to resist displacement
- + No sharp edges
- + Low maintenance
- − More expensive than crushed stone
- − Heavy and difficult to move
- − Not suitable for walking surfaces
- − Cannot be compacted
- − Limited use for structural applications
Cost Comparison
| Measure | Black Shredded Mulch | River Rock |
|---|---|---|
| Per ton | $25 – $45 | $40 – $100 |
| Per cubic yard | $30 – $50 | $45 – $120 |
Sizes & Colors
Black Shredded Mulch
Shredded strips of bark and wood, typically 1-4 inches long, dyed with carbon-based black colorant. The dye is non-toxic and safe for plants and pets. Double-shredded black mulch mats together better and resists displacement.
River Rock
River rock comes in a wide range of sizes: small (1"–2"), medium (2"–3"), large (3"–5"), and boulders (5"+). Natural colors include gray, brown, tan, white, black, and multi-colored blends. Mexican beach pebbles offer polished black and gray options.
Published February 11, 2026
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