How much mulch do I need for 300 square feet?
To cover 300 square feet 3 inches deep you need 38 bags of 2 cubic feet, 25 bags of 3 cubic feet, or 2.78 cubic yards in bulk. A 2 inch refresh takes 25 bags of 2 cubic feet; a 4 inch layer for weed control takes 50.
Mulch for 300 square feet by depth
| Depth | 2 cu ft bags | 3 cu ft bags | Bulk (cubic yards) | When to use it |
|---|---|---|---|---|
| 2 in | 25 | 17 | 1.85 | refreshing beds that already have mulch |
| 3 in | 38 | 25 | 2.78 | new beds, around shrubs and trees |
| 4 in | 50 | 34 | 3.70 | weed suppression, bare beds, playground chips |
A 2 cubic foot bag covers 8 square feet at 3 inches; a cubic yard covers 108 square feet at 3 inches. Bag counts are rounded up.
Change the numbers
The calculator below is preset for this size. Adjust anything and the results update instantly.
Bags or bulk for 300 square feet?
At 38 bags, bulk is the better buy. Those bags cost around $152 at $4 each and take 2.5 cart loads to get home; 2.78 cubic yards of bulk hardwood mulch runs $83 to $139 plus a delivery fee of $40 to $80, and it arrives in a pile you can wheelbarrow straight to the beds. Bulk is also easier to get in a single color and texture. Bags still make sense if you have no place for a pile or need dyed or rubber mulch, which rarely sells in bulk.
Spreading 300 square feet of mulch
- Pull weeds and edge the beds first; mulch over weeds just hides them for a month.
- Keep mulch 2 to 3 inches away from tree trunks and plant stems. A mulch volcano against the trunk rots the bark.
- Water the beds before mulching so the layer seals in moisture instead of blocking it.
- Spread 3 inches on new beds and 1 to 2 inches when refreshing; more than 4 inches starves roots of air.
- 300 square feet at 3 inches is about 30 wheelbarrow loads, roughly 3.3 to 5.6 hours of work for one person.
Filling new planting beds? The plant spacing calculator counts the plants and the topsoil calculator handles the soil underneath.
Common questions
How many bags of mulch do I need for 300 square feet?
38 bags of 2 cubic feet or 25 bags of 3 cubic feet at 3 inches deep. At 2 inches it is 25 and 17 bags; at 4 inches, 50 and 34.
How many yards of mulch for 300 square feet?
2.78 cubic yards at 3 inches deep, 1.85 at 2 inches, or 3.70 at 4 inches. One cubic yard covers about 108 square feet 3 inches deep.
How much does mulch for 300 square feet cost?
About $152 in bags at $4 each, or $83 to $139 for 2.78 yards of bulk hardwood mulch before delivery. Dyed and cedar mulch cost more; municipal mulch is often free if you haul it.