How Much Mulch Do I Need?
One cubic yard of mulch covers 108 sq ft at 3 inches deep, or 81 sq ft at 4 inches deep. Most landscape beds use 2–3 inches of mulch for weed suppression without smothering plant roots.
Coverage Chart
| Depth | 1 yd³ covers | 2 cu ft bag covers |
|---|---|---|
| 1 inch | 324 sq ft | 24 sq ft |
| 2 inches | 162 sq ft | 12 sq ft |
| 3 inches | 108 sq ft | 8 sq ft |
| 4 inches | 81 sq ft | 6 sq ft |
Bags vs. Bulk Delivery
Bagged mulch is convenient for small beds and easy to transport in a car. Bulk delivery becomes more economical above 3 cubic yards and is available in larger varieties like shredded hardwood, cedar, and pine bark. This free tool helps you compare both options side by side before heading to the store.
Frequently Asked Questions
How much mulch do I need for a 100 sq ft garden bed?+
For 3-inch depth: 100 × (3/12) ÷ 27 = 0.93 cubic yards, or about 1 cubic yard. That's roughly 14 bags of 2 cu ft mulch. For a 2-inch layer, you need about 0.62 cubic yards or 9–10 bags.
How deep should mulch be?+
Apply 2–3 inches of mulch for weed suppression and moisture retention in most beds. Do not exceed 4 inches — deep mulch can prevent water penetration, cause root rot, and harbor pests. Keep mulch 2–3 inches away from plant stems and tree trunks.
How much does a yard of mulch cost?+
Bulk mulch delivered typically costs $25–$55 per cubic yard depending on type and region. Shredded hardwood is $30–$45/yd; cedar is $45–$65/yd; colored mulch is $40–$60/yd. Bagged mulch at home centers costs more per yard but is convenient for small areas.
How many bags of mulch equal a yard?+
One cubic yard equals 27 cubic feet. A standard 2 cu ft bag: 27 ÷ 2 = 13.5 bags per yard. A 3 cu ft bag: 27 ÷ 3 = 9 bags per yard. Bulk delivery is more economical above 2–3 cubic yards.