#89 Stone vs Black Shredded Mulch: Size, Cost, and Which to Use

#89 Stone

In the ASTM C33 sieve table, #8 stone passes a 1/2-inch screen and stays on a #8 sieve (about 3/32 inch), and #9 is a step finer. #89 is a blend of the two: most of it passes a 3/8-inch screen and stays on a #16 sieve. In practice you get a clean, small, sharp stone that looks like crushed pea gravel. Some quarries sell the same product as #8, #9, or "3/8 clean."

Black Shredded Mulch

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.

#89 Stone

• ✓ Walkways
• ✓ Patios
• ✓ Pipe bedding
• ✓ Asphalt mix
• ✓ Dog runs
• ✓ Driveway top dressing

Black Shredded Mulch

• ✓ Landscape beds
• ✓ Tree rings
• ✓ Garden borders
• ✓ Foundation plantings
• ✓ Commercial landscaping
• ✓ Contrast beds

#89 Stone

• + Packs firmer than pea gravel at the same size
• + Stays put inside edging
• + Wheelbarrow and stroller friendly
• + Clean, so it drains
• + Cheap at $22 to $40 per ton

• − Plain gray look
• − Sharp edges, not for bare feet
• − Too small for a driveway surface
• − Less void space than #57 for drainage

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

#89 Stone

#89 stone is crushed stone screened to about 3/8 inch and smaller, with most pieces between 1/8 and 3/8 inch and no dust. It is angular, a blend of the #8 and #9 sieve sizes. Color follows the quarry: gray or white limestone, gray to pink granite, or dark basalt.

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.