Hardwood Mulch Calculator
Calculate shredded hardwood mulch in bags or yards. Includes coverage, weight, and dyed-hardwood options.
Hardwood Mulch Calculator
Shredded, dyed, and natural hardwood supported
How Much Shredded Hardwood Coverage Do You Get?
One cubic yard of shredded hardwood mulch covers 108 sq ft at 3 inches deep. The coverage formula is Length x Width x Depth in inches / 324. A 20 x 10 ft bed at 3 inches deep needs 1.85 cubic yards or 25 bags of 2 cubic foot hardwood. Shredded hardwood interlocks into a tight mat, so it covers evenly and resists wind scatter. One cubic yard equals 13.5 bags of 2 cu ft mulch. Add a 10 percent buffer for settling per the National Association of Landscape Professionals (NALP). The Mulch and Soil Council (MSC) certifies hardwood mulch coverage rates by depth.
| Depth | Coverage per Cubic Yard | Best Use |
|---|---|---|
| 2 inches | 162 sq ft | Top-dress on existing mulch |
| 3 inches | 108 sq ft | Standard bed and border depth |
| 4 inches | 81 sq ft | New beds and heavy weed zones |
Dyed vs Natural Hardwood: Which Is Better?
Dyed hardwood mulch holds its color longer than natural hardwood. Natural hardwood fades to gray in 2 to 3 months as sun bleaches the surface. Dyed mulch uses iron-oxide for red, carbon black for black, or vegetable dye for brown. The dye coats the surface but does not change the weight. Dyed mulch and natural mulch both weigh about 600 lbs per cubic yard dry. Dyed hardwood is CCA-free certified, so it is safe around plants, pets, and children per Mulch and Soil Council (MSC) standards. The color holds 9 to 12 months versus 2 to 3 months for natural hardwood.
Does dyed hardwood mulch harm plants?
Dyed hardwood mulch does not harm plants when sourced from clean wood. The iron-oxide, carbon, and vegetable dyes are inert and water-based. Reputable mulch carries CCA-free certification, meaning it contains no chromated copper arsenate from old treated lumber. Apply dyed mulch on a dry day and let it set 24 hours before rain so the dye binds to the wood.
Why does natural hardwood mulch turn gray?
Natural hardwood mulch turns gray because ultraviolet light breaks down the wood lignin at the surface. The gray layer is only skin-deep, so raking exposes fresh brown mulch underneath. Top-dress 1 inch of new hardwood each spring to restore the brown color. Dyed mulch resists this graying for 9 to 12 months.
What Does Hardwood Mulch Weigh per Yard?
Dry shredded hardwood mulch weighs 500 to 700 lbs per cubic yard, averaging 600 lbs. Moisture is the biggest weight variable for hardwood mulch. Wet hardwood mulch weighs 800 to 1,000 lbs or more per cubic yard after heavy rain. A 2 cu ft bag weighs 20 to 40 lbs depending on moisture. A pallet holds 60 to 75 bags and weighs 1,300 to 2,100 lbs total. A half-ton pickup truck hauls 2 cubic yards of dry hardwood safely. Check the weight table before you order bulk so your vehicle is not overloaded.
| Condition | Weight per Cubic Yard | Notes |
|---|---|---|
| Dry hardwood | 500 to 700 lbs | Average 600 lbs per yard |
| Wet hardwood | 800 to 1,000+ lbs | Gains weight after rain |
| 2 cu ft bag | 20 to 40 lbs each | 13.5 bags equal 1 yard |
| Full pallet | 1,300 to 2,100 lbs | 60 to 75 bags per pallet |
How much does hardwood mulch cost per cubic yard?
Hardwood mulch costs $30 to $50 per cubic yard delivered in bulk. Bagged hardwood costs $3 to $6 per 2 cu ft bag. A 5 cubic yard bulk order saves 40 percent versus the bag equivalent. Dyed hardwood costs $5 to $10 more per yard than natural because of the dye step. Bulk delivery is the cheapest route for beds over 200 sq ft.
Is hardwood mulch good on slopes?
Hardwood mulch is good on slopes because the shredded fibers interlock into a stable mat. The interlocking texture resists washout better than loose bark nuggets. For grades above 10 percent, apply 3 inches and tamp the surface lightly. Shredded hardwood stays in place where smooth bark nuggets float away in heavy rain.
Why is hardwood mulch the best soil builder?
Hardwood mulch is the best soil builder of the wood mulches because it breaks down fast and feeds the soil. As the fibers decompose, they add organic matter and improve soil structure within 1 to 2 years. Bark mulch lasts longer but builds soil slower. Choose hardwood when your goal is richer soil under the mulch layer.
FAQ
A 100 sq ft bed at 3 inches deep needs 13 bags of 2 cubic foot hardwood mulch or 9 bags of 3 cubic foot. Round up to the next whole bag. Order 14 bags of 2 cu ft to cover the 10 percent buffer.
Shredded hardwood mulch lasts 1 to 2 years before it needs refreshing. It breaks down faster than bark mulch but builds soil better. Top-dress 1 inch each spring to restore the depth and color.
Hardwood mulch ties up a small amount of nitrogen at the soil surface as it decomposes. The effect stays in the top inch and rarely reaches plant roots. Add a nitrogen source like blood meal if you mix fresh hardwood into the soil.
A 500 sq ft bed at 3 inches deep needs 4.63 cubic yards of hardwood mulch or 63 bags of 2 cu ft. Order 5 cubic yards with the 10 percent buffer. That equals 125 cubic feet of hardwood total.
Hardwood mulch uses the whole tree shredded, while bark mulch is the bark layer only. Hardwood lasts 1 to 2 years versus 2 to 4 years for bark. Hardwood builds soil faster as it breaks down. Bark resists matting and lets water pass through better.
Dyed hardwood mulch weighs the same as natural hardwood, about 600 lbs per cubic yard dry. The dye is a thin surface coat that adds no measurable weight. Both gain 30 to 50 percent weight when wet from rain.
Browse every calculator on the site — pick any tool below.