Weight per cubic yard by mulch type
The single biggest variable in mulch weight is moisture content. USDA Forest Service density tables and Penn State Extension bulletins both show wet mulch carrying 20–30% more mass than the same volume sampled after a week of dry weather. Use the dry column for ordering math, the wet column for trailer planning after rain.
| Mulch type | Dry (lb/cu yd) | Wet (lb/cu yd) | lb per cu ft (dry) |
|---|---|---|---|
| Shredded hardwood | 800–1,000 | 1,000–1,200 | 30–37 |
| Pine bark nuggets | 500–700 | 700–900 | 19–26 |
| Cedar / cypress shredded | 700–900 | 900–1,100 | 26–33 |
| Pine straw (baled) | 200–300 | 350–450 | 7–11 |
| Compost-based mulch | 1,000–1,400 | 1,400–1,800 | 37–52 |
| Rubber mulch (SBR) | 1,500–2,000 | 1,500–2,050 | 55–74 |
| Stone / decorative gravel | 2,400–2,700 | 2,500–2,800 | 89–100 |
USDA Forest Service data on common landscape mulches give air-dry bulk densities of roughly 350–450 kg/m³ (590–760 lbs/yd³) for shredded hardwood and 250–350 kg/m³ (420–590 lbs/yd³) for pine bark; values rise by 20–30% with high moisture content.
Hauling capacity by vehicle
Every pickup and trailer sold in the US has a Gross Vehicle Weight Rating (GVWR) and a payload sticker on the driver-side door jamb. Treat the numbers below as the practical ceiling for dry hardwood mulch — subtract 20% if the pile sat through overnight rain.
| Vehicle | Typical payload | Dry hardwood (cu yd) | Wet hardwood (cu yd) |
|---|---|---|---|
| Sedan trunk / hatchback | 300–500 lb | 0.3–0.5 | 0.25–0.4 |
| Compact SUV (RAV4, CR-V) | 900–1,200 lb | 1.0 | 0.8 |
| Half-ton pickup (F-150, 1500) | 1,500–2,000 lb | 1.5–2.0 | 1.25–1.5 |
| 3/4-ton pickup (F-250, 2500) | 3,000–4,000 lb | 3.0–4.0 | 2.5–3.25 |
| 1-ton dump (F-350, 3500) | 5,000–7,000 lb | 5.0–7.0 | 4.5–5.75 |
| Single-axle utility trailer | 2,000–3,500 lb GVWR | 2.0–3.5 | 1.5–3.0 |
| Tandem-axle trailer | 5,000–7,000 lb GVWR | 5.0–7.0 | 4.0–5.75 |
Bag, pallet, and a worked load example
- 2 cu ft hardwood bag — 35–45 lb. One-person carry from car to bed.
- 3 cu ft hardwood bag — 55–65 lb. Two-person lift past chest height.
- 0.8 cu ft rubber bag — 40–50 lb. Denser than it looks.
- Full pallet (65 × 2 cu ft) — ~2,500 lb. Needs a forklift or pallet jack.
Why moisture and species change the math
- Species density. Pine and cypress trap less mass per cubic foot than oak or maple — that is why pine bark nuggets are the lightest common option.
- Particle size. Finer grinds pack tighter, raising density 10–15% versus nuggets of the same species.
- Age of pile. Stockpiled mulch over 6 months old begins composting; the inner mass densifies even as the surface dries.
- Moisture. The dominant variable. A summer thunderstorm can add 200–300 lb per cubic yard within hours.